JP2021038786A - Ventilated brake disc rotor - Google Patents

Ventilated brake disc rotor Download PDF

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Publication number
JP2021038786A
JP2021038786A JP2019160082A JP2019160082A JP2021038786A JP 2021038786 A JP2021038786 A JP 2021038786A JP 2019160082 A JP2019160082 A JP 2019160082A JP 2019160082 A JP2019160082 A JP 2019160082A JP 2021038786 A JP2021038786 A JP 2021038786A
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width
brake disc
disc rotor
connection
connection portion
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JP6825057B1 (en
Inventor
俊和 岡村
Toshikazu Okamura
俊和 岡村
達也 山岸
Tatsuya Yamagishi
達也 山岸
達矢 齋藤
Tatsuya Saito
達矢 齋藤
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Kiriu Corp
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Kiriu Corp
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Priority to JP2019160082A priority Critical patent/JP6825057B1/en
Priority to CN201911068357.2A priority patent/CN112443605B/en
Priority to EP19214949.0A priority patent/EP3789253B1/en
Priority to US16/708,758 priority patent/US11236790B2/en
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Publication of JP6825057B1 publication Critical patent/JP6825057B1/en
Publication of JP2021038786A publication Critical patent/JP2021038786A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T5/00—Vehicle modifications to facilitate cooling of brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/12—Discs; Drums for disc brakes
    • F16D65/128—Discs; Drums for disc brakes characterised by means for cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/0006—Noise or vibration control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D65/12—Discs; Drums for disc brakes
    • F16D65/123—Discs; Drums for disc brakes comprising an annular disc secured to a hub member; Discs characterised by means for mounting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/78—Features relating to cooling
    • F16D65/84—Features relating to cooling for disc brakes
    • F16D65/847—Features relating to cooling for disc brakes with open cooling system, e.g. cooled by air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D2065/13—Parts or details of discs or drums
    • F16D2065/1304—Structure
    • F16D2065/1328—Structure internal cavities, e.g. cooling channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D2065/13—Parts or details of discs or drums
    • F16D2065/1304—Structure
    • F16D2065/1332—Structure external ribs, e.g. for cooling or reinforcement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/02—Braking members; Mounting thereof
    • F16D2065/13—Parts or details of discs or drums
    • F16D2065/134—Connection
    • F16D2065/1344—Connection permanent, e.g. by casting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/78—Features relating to cooling
    • F16D2065/788—Internal cooling channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2200/00—Materials; Production methods therefor
    • F16D2200/0004—Materials; Production methods therefor metallic
    • F16D2200/0008—Ferro
    • F16D2200/0013—Cast iron

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Braking Arrangements (AREA)

Abstract

To provide a ventilated brake disc rotor capable of suppressing generation of vibration in accompany with thermal buckling.SOLUTION: In a ventilated brake disc rotor, a second connection portion 32 disposed at a most outer peripheral side of an inner slide plate 21 and an outer slide plate 22, of a connection portion 3 is formed into a substantially pentagonal cross section composed of a first width portion 32a disposed on a first row positioned at an inner peripheral side of each of slide plates 21, 22, and a second width portion 32b disposed at a radial inner side with respect to the first width portion 32a, and reduced in a circumferential width W6 with respect to the first width portion 32a toward an inner peripheral side of each of the slide plates 21, 22. Thus a larger cross-sectional area of the second connection portion 32 can be secured, and generation of vibration in accompany with thermal buckling of the brake disc rotor can be suppressed.SELECTED DRAWING: Figure 4

Description

本発明は、対向する摺動板が複数の放熱フィンにより接続されてなるベンチレーテッド型ブレーキディスクロータに関する。 The present invention relates to a ventilated brake disc rotor in which opposing sliding plates are connected by a plurality of heat radiation fins.

例えば従来のベンチレーテッド型ブレーキディスクロータとしては、以下の特許文献に記載されたものが知られている。 For example, as a conventional ventilated type brake disc rotor, those described in the following patent documents are known.

すなわち、従来のベンチレーテッド型ブレーキディスクロータは、図１３に示すように、車両に取り付けられる取付基部１００と、この取付基部１００の外周側に一体形成され、対向配置された一対の環状摺動板であるアウタ摺動板１０１及びインナ摺動板１０２と、アウタ摺動板１０１とインナ摺動板１０２を接続する複数の第１〜第３接続部１０３〜１０５と、を備えている。第１〜第３接続部１０３〜１０５は、前記各摺動板１０１，１０２の周方向においてそれぞれ放射状に設けられると共に、径方向において千鳥状に３列に設けられ、そのうち最外周側に設けられた第２接続部１０４が、内周側へ向かって幅Ｗｘが徐々に小さくなる逆三角形状に形成されている。 That is, as shown in FIG. 13, the conventional ventilated brake disc rotor is integrally formed with the mounting base 100 to be mounted on the vehicle and the outer peripheral side of the mounting base 100, and a pair of annular sliding surfaces arranged opposite to each other. The outer sliding plate 101 and the inner sliding plate 102, which are plates, and a plurality of first to third connecting portions 103 to 105 for connecting the outer sliding plate 101 and the inner sliding plate 102 are provided. The first to third connecting portions 103 to 105 are provided radially in the circumferential direction of each of the sliding plates 101 and 102, and are provided in three rows in a staggered manner in the radial direction, and are provided on the outermost peripheral side thereof. The second connecting portion 104 is formed in an inverted triangular shape in which the width Wx gradually decreases toward the inner peripheral side.

特許第５２２４１９８号公報Japanese Patent No. 5224198

しかしながら、前記従来のベンチレーテッド型ブレーキディスクロータでは、ブレーキディスクロータの剛性に最も影響する、前記各摺動板１０１，１０２の最外周側に配置される第２接続部１０４が前記三角形状に形成されている。このため、ブレーキディスクロータの十分な剛性を確保することが困難であり、これによって、いわゆる熱座屈が発生し、この熱座屈に伴い振動（ジャダ）を招来してしまうおそれがあった。 However, in the conventional ventilated brake disc rotor, the second connecting portion 104 arranged on the outermost peripheral side of each of the sliding plates 101 and 102, which most affects the rigidity of the brake disc rotor, has a triangular shape. It is formed. For this reason, it is difficult to secure sufficient rigidity of the brake disc rotor, which causes so-called thermal buckling, which may cause vibration (judder) due to the thermal buckling.

本発明は、かかる技術的課題に着目して案出されたものであって、熱座屈に伴う振動の発生を抑制することができるベンチレーテッド型ブレーキディスクロータを提供することを目的としている。 The present invention has been devised focusing on such a technical problem, and an object of the present invention is to provide a ventilated brake disc rotor capable of suppressing the generation of vibration due to thermal buckling. ..

本発明は、その一態様として、車軸方向に対向して配置され、円環状に形成されたインナ摺動板及びアウタ摺動板と、前記インナ摺動板と前記アウタ摺動板の間に、該各摺動板の径方向において複数列設けられ、前記インナ摺動板と前記アウタ摺動板を接続する複数の接続部と、を備えたベンチレーテッド型ブレーキディスクロータにおいて、前記複数の接続部は、前記各摺動板の内周側に位置する第１列に配置された第１接続部と、前記各摺動板の外周側に位置する第２列に配置された第２接続部と、を含み、前記第２接続部は、前記径方向の外側に設けられた第１幅部と、該第１幅部よりも前記径方向の内側に設けられ、前記各摺動板の内周側へ向けて前記第１幅部よりも周方向幅が減少する第２幅部と、を有する。 As one aspect of the present invention, the inner sliding plate and the outer sliding plate which are arranged so as to face each other in the axle direction and are formed in an annular shape, and between the inner sliding plate and the outer sliding plate, respectively. In a ventilated brake disc rotor provided in a plurality of rows in the radial direction of the sliding plates and including a plurality of connecting portions for connecting the inner sliding plates and the outer sliding plates, the plurality of connecting portions are provided. , The first connecting portion arranged in the first row located on the inner peripheral side of each of the sliding plates, and the second connecting portion arranged in the second row located on the outer peripheral side of each sliding plate. The second connecting portion is provided on the outer side in the radial direction and the inner peripheral side in the radial direction from the first width portion. It has a second width portion whose circumferential width is smaller than that of the first width portion.

このように、第２接続部が、第１幅部と第２幅部とからなる横断面ほぼ五角形状となるように形成されていることにより、当該第２接続部の断面積をより大きく確保することが可能となる。すなわち、前記横断面ほぼ五角形状としたことで、例えば横断面ほぼ三角形状の場合と比べて、第２接続部の間隔が最も広くブレーキディスクロータの剛性に最も影響を及ぼす、最外周側に位置する第１幅部の断面積を大きく確保することができ、ブレーキディスクロータの剛性を効果的に向上させることができる。 As described above, since the second connecting portion is formed so as to have a substantially pentagonal cross section including the first width portion and the second width portion, a larger cross-sectional area of the second connecting portion is secured. It becomes possible to do. That is, by making the cross section substantially pentagonal, for example, as compared with the case where the cross section is substantially triangular, the distance between the second connecting portions is the widest and the position is located on the outermost peripheral side, which most affects the rigidity of the brake disc rotor. A large cross-sectional area of the first width portion can be secured, and the rigidity of the brake disc rotor can be effectively improved.

また、第２接続部が、横断面ほぼ五角形状となるように形成されていることで、例えば横断面ほぼ三角形状の場合と比べて、第１幅部に相当する分だけ、第２接続部の断面積の変更の自由度を増大させることができる。これにより、ブレーキディスクロータの固有振動数の変更の自由度が増大し、当該ブレーキディスクロータの振動に伴うブレーキノイズの抑制に寄与することができる。 Further, since the second connecting portion is formed so as to have a substantially pentagonal cross section, for example, as compared with the case where the cross section is substantially triangular, the second connecting portion corresponds to the first width portion. The degree of freedom of changing the cross-sectional area of is increased. As a result, the degree of freedom in changing the natural frequency of the brake disc rotor is increased, and it is possible to contribute to the suppression of brake noise caused by the vibration of the brake disc rotor.

また、前記ベンチレーテッド型ブレーキディスクロータの別の態様として、前記複数の接続部は、前記径方向において３列に配置され、前記第１列と前記第２列との間の第３列に配置された第３接続部を含むことが望ましい。 Further, as another aspect of the ventilated brake disc rotor, the plurality of connecting portions are arranged in three rows in the radial direction, and are arranged in a third row between the first row and the second row. It is desirable to include an arranged third connection.

このように、第３接続部が設けられていることで、各接続部間に形成される通気路のレイアウトの自由度が増大する。これにより、効率的な通気が可能となり、ブレーキディスクロータの効果的な冷却を図ることができる。 By providing the third connecting portion in this way, the degree of freedom in the layout of the ventilation path formed between the connecting portions is increased. As a result, efficient ventilation is possible, and effective cooling of the brake disc rotor can be achieved.

また、前記ベンチレーテッド型ブレーキディスクロータのさらに別の態様として、前記第３接続部は、前記径方向の外側へ向けて前記周方向幅が増大する第３幅部と、該第３幅部よりも前記径方向の外側に設けられ、前記各摺動板の外周側へ向けて前記周方向幅が減少する第４幅部と、を有することが望ましい。 Further, as still another aspect of the ventilated type brake disc rotor, the third connection portion includes a third width portion in which the circumferential width increases toward the outside in the radial direction, and the third width portion. It is desirable to have a fourth width portion which is provided on the outer side in the radial direction and whose circumferential width decreases toward the outer peripheral side of each of the sliding plates.

このように、第３接続部が、ブレーキディスクロータの剛性に影響を及ぼしやすい径方向外側へ向かって周方向幅が増大するように構成されていることで、ブレーキディスクロータの剛性を、より効果的に向上させることができる。 In this way, the third connection portion is configured so that the circumferential width increases toward the outer side in the radial direction, which tends to affect the rigidity of the brake disc rotor, so that the rigidity of the brake disc rotor is more effective. Can be improved.

また、第３接続部は径方向に沿って配置されるため、第３接続部の周方向幅が一定の場合、周方向に隣り合う第３接続部の間に形成される通気路の幅は、径方向外側へ向かって大きくなる。一方、第２接続部の断面積を大きく確保しようとすると、第２接続部と第３接続部が近接することとなり、第２接続部と第３接続部の間に形成される通気路の幅が小さくなる。そうすると、周方向に隣接する第３接続部間に径方向外側へ向かって徐々に拡大形成される通気路に対して、第２、第３接続部間に形成される通気路の幅の変化量（ギャップ）が大きくなってしまう。その結果、周方向に隣接する第３接続部間に形成される通気路から第２、第３接続部間に形成される通気路へ流れる通気の抵抗が増大し、ブレーキディスクロータの十分な冷却効果が得られないおそれがある。 Further, since the third connecting portion is arranged along the radial direction, when the circumferential width of the third connecting portion is constant, the width of the ventilation path formed between the third connecting portions adjacent to each other in the circumferential direction is , Increasing outward in the radial direction. On the other hand, when trying to secure a large cross-sectional area of the second connecting portion, the second connecting portion and the third connecting portion come close to each other, and the width of the ventilation path formed between the second connecting portion and the third connecting portion. Becomes smaller. Then, the amount of change in the width of the ventilation path formed between the second and third connection portions with respect to the ventilation path gradually expanded outward in the radial direction between the third connection portions adjacent in the circumferential direction. (Gap) becomes large. As a result, the resistance of ventilation flowing from the ventilation path formed between the third connecting portions adjacent in the circumferential direction to the ventilation path formed between the second and third connecting portions is increased, and the brake disc rotor is sufficiently cooled. There is a risk that the effect will not be obtained.

これに対して、上述のように、第３接続部において、径方向外側へ向けて周方向幅が増大する第３幅部が設けられていることによって、周方向に隣り合う第３接続部の間に形成される通気路の幅の変化量を小さくすることができる。これにより、周方向に隣接する第３接続部間に形成される通気路と、第２接続部と第３接続部の間に形成される通気路と、の間における通気路の幅の変化量（ギャップ）を低減することが可能となる。その結果、周方向に隣接する第３接続部間に形成される通気路から第２、第３接続部間に形成される通気路への通気抵抗を低減させることが可能となり、ブレーキディスクロータの冷却効果を向上させることができる。さらには、周方向に隣接する第３接続部間に形成される通気路と第２、第３接続部間に形成される通気路との間の通気抵抗が低減されることにより、ブレーキディスクロータの鋳造時において、第１、第２、第３接続部（第１、第２、第３接続部の間の通気路）の形成に供する中子（例えば砂中子）を容易に除去できるメリットもある。 On the other hand, as described above, the third connecting portion is provided with the third width portion whose circumferential width increases outward in the radial direction, so that the third connecting portions adjacent to each other in the circumferential direction are provided. The amount of change in the width of the air passage formed between them can be reduced. As a result, the amount of change in the width of the ventilation path between the ventilation path formed between the third connection portions adjacent in the circumferential direction and the ventilation path formed between the second connection portion and the third connection portion. (Gap) can be reduced. As a result, it is possible to reduce the ventilation resistance from the ventilation path formed between the third connection portions adjacent to each other in the circumferential direction to the ventilation path formed between the second and third connection portions, and it becomes possible to reduce the ventilation resistance of the brake disc rotor. The cooling effect can be improved. Furthermore, the brake disc rotor is reduced by reducing the ventilation resistance between the ventilation path formed between the third connection portions adjacent to each other in the circumferential direction and the ventilation path formed between the second and third connection portions. The merit that the core (for example, sand core) used for forming the first, second, and third connection portions (ventilation passage between the first, second, and third connection portions) can be easily removed at the time of casting. There is also.

また、前記ベンチレーテッド型ブレーキディスクロータのさらに別の態様として、前記第２接続部のうち一部の前記第２接続部は、他の前記第２接続部よりも小さい前記周方向幅を有する第２狭幅接続部として構成されていることが望ましい。 Further, as yet another aspect of the ventilated brake disc rotor, a part of the second connection portion has a circumferential width smaller than that of the other second connection portion. It is desirable that it is configured as a second narrow connection portion.

このように、第２接続部の一部を他の第２接続部よりも狭い周方向幅となる第２狭幅接続部として構成し、ブレーキディスクロータの周方向における一部の剛性を意図的に低下させることにより、当該第２狭幅接続部を振動モードの節（又は腹）として、ブレーキディスクロータに固定することができる。これにより、ブレーキパッドによる定常な振動モードの発生を抑制することが可能となり、ブレーキノイズの抑制に供する。とりわけ、第２接続部は、ブレーキディスクロータの最外周側に配置されることから、剛性の低下量（ギャップ）が大きく、前記振動モードの節（又は腹）をより明確に設定することができる。 In this way, a part of the second connection part is configured as a second narrow width connection part having a width in the circumferential direction narrower than that of the other second connection part, and a part of the rigidity of the brake disc rotor in the circumferential direction is intentionally made. The second narrow connection portion can be fixed to the brake disc rotor as a node (or antinode) of the vibration mode. As a result, it becomes possible to suppress the generation of a steady vibration mode by the brake pad, and the brake noise is suppressed. In particular, since the second connection portion is arranged on the outermost peripheral side of the brake disc rotor, the amount of decrease in rigidity (gap) is large, and the node (or antinode) of the vibration mode can be set more clearly. ..

また、前記ベンチレーテッド型ブレーキディスクロータのさらに別の態様として、前記第３接続部のうち一部の前記第３接続部は、他の前記第３接続部よりも小さい前記周方向幅を有する第３狭幅接続部として構成されていることが望ましい。 Further, as yet another aspect of the ventilated brake disc rotor, a part of the third connection portion has a circumferential width smaller than that of the other third connection portion. It is desirable that it is configured as a third narrow connection portion.

このように、第３接続部の一部を他の第３接続部よりも狭い周方向幅となる第３狭幅接続部として構成し、ブレーキディスクロータの周方向における一部の剛性を意図的に低下させることにより、当該第３狭幅接続部を振動モードの節（又は腹）として、ブレーキディスクロータに固定することができる。これにより、ブレーキパッドによる定常な振動モードの発生を抑制することが可能となり、ブレーキノイズの抑制に供する。 In this way, a part of the third connection part is configured as a third narrow width connection part having a width in the circumferential direction narrower than that of the other third connection parts, and a part of the rigidity of the brake disc rotor in the circumferential direction is intentionally made. The third narrow connection portion can be fixed to the brake disc rotor as a node (or antinode) of the vibration mode. As a result, it becomes possible to suppress the generation of a steady vibration mode by the brake pad, and the brake noise is suppressed.

また、前記ベンチレーテッド型ブレーキディスクロータのさらに別の態様として、前記第２接続部のうち一部の前記第２接続部は、他の前記第２接続部よりも小さい前記周方向幅を有する第２狭幅接続部として構成され、前記第３接続部のうち前記第２狭幅接続部に隣接する一対の前記第３接続部は、他の前記第３接続部よりも小さい前記周方向幅を有する第３狭幅接続部として構成されていることが望ましい。 Further, as yet another aspect of the ventilated brake disc rotor, a part of the second connection portion has a circumferential width smaller than that of the other second connection portion. The pair of the third connection portions, which are configured as the second narrow connection portion and are adjacent to the second narrow connection portion among the third connection portions, have a circumferential width smaller than that of the other third connection portions. It is desirable that it is configured as a third narrow connection portion having.

このように、第２狭幅接続部に加えて、一対の第３狭幅接続部を設けることで、当該第２狭幅接続部及び第３狭幅接続部によって、振動モードの節（又は腹）をより明確に設定することができる。これにより、ブレーキパッドによる定常な振動モードの発生がより効果的に抑制され、ブレーキノイズの効果的な抑制に供する。また、最外周列に位置する一の第２接続部に対して、中間列に位置する一対の第３接続部の剛性を低下させる結果、一対の第２接続部の剛性を低下させる場合に比べて、比較的高い剛性を確保できるメリットがある。 In this way, by providing a pair of third narrow-width connection portions in addition to the second narrow-width connection portion, the second narrow-width connection portion and the third narrow-width connection portion can be used as a vibration mode node (or antinode). ) Can be set more clearly. As a result, the generation of the steady vibration mode by the brake pad is suppressed more effectively, and the brake noise is effectively suppressed. Further, as a result of reducing the rigidity of the pair of third connecting portions located in the intermediate row with respect to the one second connecting portion located in the outermost peripheral row, the rigidity of the pair of second connecting portions is reduced as compared with the case where the rigidity is reduced. Therefore, there is a merit that relatively high rigidity can be secured.

また、前記ベンチレーテッド型ブレーキディスクロータのさらに別の態様として、前記第２接続部のうち周方向に隣接する一対の前記第２接続部は、他の前記第２接続部よりも小さい前記周方向幅を有する一対の第２狭幅接続部として構成され、前記第３接続部のうち前記一対の第２狭幅接続部の周方向中間に位置する前記第３接続部は、他の前記第３接続部よりも小さい前記周方向幅を有する第３狭幅接続部として構成されていることが望ましい。 Further, as yet another aspect of the ventilated brake disc rotor, the pair of the second connecting portions adjacent to each other in the circumferential direction are smaller than the other second connecting portions. The third connection portion configured as a pair of second narrow width connection portions having a directional width and located in the middle of the pair of second narrow width connection portions in the circumferential direction among the third connection portions is the other third connection portion. It is desirable that it is configured as a third narrow-width connection portion having the circumferential width smaller than that of the three connection portions.

このように、一対の第２狭幅接続部に加えて、第３狭幅接続部を設けることで、当該第２狭幅接続部及び第３狭幅接続部によって、振動モードの節（又は腹）をより明確に設定することができる。これにより、ブレーキパッドによる定常な振動モードの発生がより効果的に抑制され、ブレーキノイズの効果的な抑制に供する。また、中間列に位置する一の第３接続部に対して、最外周列に位置する一対の第２接続部の剛性を低下させる結果、一対の第３接続部の剛性を低下させる場合に比べて、より大きな剛性低下を招来し、ブレーキノイズをより効果的に抑制できるメリットがある。 In this way, by providing the third narrow connection portion in addition to the pair of second narrow connection portions, the second narrow connection portion and the third narrow connection portion can be used as a vibration mode node (or antinode). ) Can be set more clearly. As a result, the generation of the steady vibration mode by the brake pad is suppressed more effectively, and the brake noise is effectively suppressed. Further, as a result of reducing the rigidity of the pair of second connecting portions located in the outermost peripheral row with respect to the one third connecting portion located in the intermediate row, the rigidity of the pair of third connecting portions is reduced as compared with the case where the rigidity is reduced. Therefore, there is a merit that the rigidity can be further reduced and the brake noise can be suppressed more effectively.

また、前記ベンチレーテッド型ブレーキディスクロータのさらに別の態様として、前記第２接続部の前記第２幅部を構成する二辺は、それぞれ前記第１幅部側へ凹となる凹円弧状に形成されていることが望ましい。 Further, as still another aspect of the ventilated type brake disc rotor, the two sides forming the second width portion of the second connection portion have a concave arc shape that is concave toward the first width portion, respectively. It is desirable that it is formed.

このように、第２接続部の第２幅部を構成する二辺が第１幅部側へ凹となる凹円弧状に形成されていることにより、第２接続部と第３接続部の距離を維持したまま、前記第２幅部を構成する二辺の凹円弧状のオフセット分だけ、第３接続部を第２接続部側に延長、又は近づけることができる。これにより、第３接続部をより外側（外周側）に配置することが可能となり、ブレーキディスクロータの剛性のさらなる向上が図れる。 In this way, the two sides forming the second width portion of the second connecting portion are formed in a concave arc shape that is concave toward the first width portion, so that the distance between the second connecting portion and the third connecting portion is formed. The third connecting portion can be extended or brought closer to the second connecting portion side by the amount of the concave arc-shaped offset of the two sides constituting the second width portion. As a result, the third connection portion can be arranged on the outer side (outer peripheral side), and the rigidity of the brake disc rotor can be further improved.

また、前記ベンチレーテッド型ブレーキディスクロータのさらに別の態様として、前記第３接続部の前記第４幅部を構成する二辺は、それぞれ前記第３幅部側へ凹となる凹円弧状に形成されていることが望ましい。 Further, as still another aspect of the ventilated type brake disc rotor, the two sides forming the fourth width portion of the third connection portion have a concave arc shape that is concave toward the third width portion, respectively. It is desirable that it is formed.

このように、第３接続部の第４幅部を構成する二辺が第３幅部側へ凹となる凹円弧状に形成されていることにより、第２接続部と第３接続部の距離を維持したまま、前記第４幅部を構成する二辺の凹円弧状のオフセット分だけ、第３接続部を第２接続部側にさらに延長、又は近づけることができる。これにより、第３接続部をより外側（外周側）に配置することが可能となり、ブレーキディスクロータの剛性のさらなる向上が図れる。 In this way, the two sides forming the fourth width portion of the third connecting portion are formed in a concave arc shape that is concave toward the third width portion, so that the distance between the second connecting portion and the third connecting portion is formed. The third connecting portion can be further extended or brought closer to the second connecting portion side by the offset of the concave arc shape on the two sides constituting the fourth width portion. As a result, the third connection portion can be arranged on the outer side (outer peripheral side), and the rigidity of the brake disc rotor can be further improved.

また、前記ベンチレーテッド型ブレーキディスクロータのさらに別の態様として、前記第３接続部の前記第３幅部を構成する二辺は、それぞれ前記第４幅部側へ凹となる凹円弧状に形成されていることが望ましい。 Further, as still another aspect of the ventilated type brake disc rotor, the two sides forming the third width portion of the third connection portion have a concave arc shape that is concave toward the fourth width portion, respectively. It is desirable that it is formed.

このように、第３接続部の第３幅部を構成する二辺が第４幅部側へ凹となる凹円弧状に形成されていることにより、第１接続部と第３接続部の距離を維持したまま、前記第３幅部を構成する二辺の凹円弧状のオフセット分だけ、第１接続部を第３接続部側に延長、又は近づけることができる。これにより、第１接続部をより外側（外周側）に配置することが可能となり、ブレーキディスクロータの剛性のさらなる向上が図れる。 In this way, the two sides forming the third width portion of the third connecting portion are formed in a concave arc shape that is concave toward the fourth width portion, so that the distance between the first connecting portion and the third connecting portion is formed. The first connecting portion can be extended or brought closer to the third connecting portion side by the amount of the concave arc-shaped offset of the two sides constituting the third width portion. As a result, the first connection portion can be arranged on the outer side (outer peripheral side), and the rigidity of the brake disc rotor can be further improved.

本発明によれば、最外周側に位置する第１幅部の断面積を大きく確保でき、ブレーキディスクロータの剛性が効果的に向上する結果、熱座屈に伴う振動の発生を抑制することができる。 According to the present invention, it is possible to secure a large cross-sectional area of the first width portion located on the outermost peripheral side, effectively improve the rigidity of the brake disc rotor, and as a result, suppress the generation of vibration due to thermal buckling. it can.

本発明に係るベンチレーテッド型ブレーキディスクロータであって、アウタ摺動板と取付基部とを接続してなるブレーキディスクロータの縦断面図である。It is a vertical sectional view of the brake disc rotor which is the ventilated type brake disc rotor which concerns on this invention, which is formed by connecting an outer sliding plate and a mounting base. 図１に示すブレーキディスクロータの他例であって、インナ摺動板と取付基部とを接続してなるブレーキディスクロータの縦断面図である。It is another example of the brake disc rotor shown in FIG. 1, and is the vertical cross-sectional view of the brake disc rotor formed by connecting an inner sliding plate and a mounting base. 本発明の第１実施形態を示し、図１のＡ−Ａ線断面図である。A first embodiment of the present invention is shown, and is a cross-sectional view taken along the line AA of FIG. 図３の要部拡大図である。It is an enlarged view of the main part of FIG. 本発明の第２実施形態を表した、図４に相当するブレーキディスクロータの要部拡大断面図である。FIG. 5 is an enlarged cross-sectional view of a main part of a brake disc rotor corresponding to FIG. 4, showing a second embodiment of the present invention. 本発明の第３実施形態を表した、図４に相当するブレーキディスクロータの要部拡大断面図である。FIG. 5 is an enlarged cross-sectional view of a main part of a brake disc rotor corresponding to FIG. 4, showing a third embodiment of the present invention. 本発明の第４実施形態を表した、図４に相当するブレーキディスクロータの要部拡大断面図である。FIG. 5 is an enlarged cross-sectional view of a main part of a brake disc rotor corresponding to FIG. 4, showing a fourth embodiment of the present invention. 本発明の第５実施形態を表した、図４に相当するブレーキディスクロータの要部拡大断面図である。FIG. 5 is an enlarged cross-sectional view of a main part of a brake disc rotor corresponding to FIG. 4, showing a fifth embodiment of the present invention. 本発明の第６実施形態を表した、図４に相当するブレーキディスクロータの要部拡大断面図である。FIG. 5 is an enlarged cross-sectional view of a main part of a brake disc rotor corresponding to FIG. 4, showing a sixth embodiment of the present invention. 本発明の第７実施形態を表した、図４に相当するブレーキディスクロータの要部拡大断面図である。FIG. 5 is an enlarged cross-sectional view of a main part of a brake disc rotor corresponding to FIG. 4, showing a seventh embodiment of the present invention. 本発明の第８実施形態を表した、図４に相当するブレーキディスクロータの要部拡大断面図である。FIG. 5 is an enlarged cross-sectional view of a main part of a brake disc rotor corresponding to FIG. 4, showing an eighth embodiment of the present invention. 本発明の第９実施形態を表した、図４に相当するブレーキディスクロータの要部拡大断面図である。FIG. 5 is an enlarged cross-sectional view of a main part of a brake disc rotor corresponding to FIG. 4, showing a ninth embodiment of the present invention. 従来のベンチレーテッド型ブレーキディスクロータの部分断面斜視図である。It is a partial cross-sectional perspective view of the conventional ventilated type brake disc rotor.

以下、本発明に係るベンチレーテッド型ブレーキディスクロータの実施形態を図面に基づいて詳述する。なお、本実施形態では、本発明に係るベンチレーテッド型ブレーキディスクロータを、従来と同様、自動車用のディスクブレーキに適用したものを例示して説明する。 Hereinafter, embodiments of the ventilated brake disc rotor according to the present invention will be described in detail with reference to the drawings. In the present embodiment, the ventilated brake disc rotor according to the present invention, which is applied to a disc brake for an automobile as in the conventional case, will be described as an example.

〔第１実施形態〕
図１〜図４は、本実施形態に係るベンチレーテッド型ブレーキディスクロータを示す。なお、各図の説明では、ディスクロータの中心を通る中心軸線Ｚに平行な方向を「軸方向」、中心軸線Ｚに直交する方向を「径方向」、中心軸線Ｚ周りの方向を「周方向」として説明する。また、前記「軸方向」については、図１、図２中の紙面右側を車体側である「内側」、左側を反車体側である「外側」として説明する。 [First Embodiment]
1 to 4 show a ventilated brake disc rotor according to the present embodiment. In the description of each figure, the direction parallel to the central axis Z passing through the center of the disc rotor is the "axial direction", the direction orthogonal to the central axis Z is the "diameter direction", and the direction around the central axis Z is the "circumferential direction". ". Further, the "axial direction" will be described with the right side of the paper surface in FIGS. 1 and 2 as the "inside" on the vehicle body side and the left side as the "outside" on the anti-vehicle body side.

（ブレーキディスクロータの構成）
図１は、本発明に係るベンチレーテッド型ブレーキディスクロータであって、アウタ摺動板２２が取付基部１に接続されたブレーキディスクロータの縦断面図を示している。図２は、図１に示すブレーキディスクロータの形態の他例を示し、インナ摺動板２１が取付基部１に接続されたブレーキディスクロータの縦断面図を示している。図３は、図１のＡ−Ａ線に沿って切断した、ブレーキディスクロータの横断面図を示している。 (Brake disc rotor configuration)
FIG. 1 shows a vertical cross-sectional view of a ventilated brake disc rotor according to the present invention, in which an outer sliding plate 22 is connected to a mounting base 1. FIG. 2 shows another example of the form of the brake disc rotor shown in FIG. 1, and shows a vertical cross-sectional view of the brake disc rotor in which the inner sliding plate 21 is connected to the mounting base 1. FIG. 3 shows a cross-sectional view of the brake disc rotor cut along the line AA of FIG.

ブレーキディスクロータは、図１に示すように、図示外の車両の車軸に一体回転可能に取付固定される取付基部１と、該取付基部１の外周にフランジ状に設けられ、図示外のブレーキパッドと摺動する摺動板部２と、を備える。取付基部１と摺動板部２とは、金属材料、例えばねずみ鋳鉄によって、一体に形成されている。なお、本実施形態では、取付基部１と摺動板部２とが同一の材料によって一体に形成された形態を例示しているが、本発明の適用は当該形態に限定されるものではなく、例えばいわゆるフローティングディスクのような、取付基部１と摺動板部２とが別体に形成されピンなどの連結部材を介して一体に構成された形態にも適用可能である。 As shown in FIG. 1, the brake disc rotor has a mounting base 1 that is integrally rotatably mounted and fixed to the axle of a vehicle (not shown), and a brake pad (not shown) provided in a flange shape on the outer periphery of the mounting base 1. It is provided with a sliding plate portion 2 that slides with. The mounting base 1 and the sliding plate 2 are integrally formed of a metal material such as gray cast iron. Although the present embodiment illustrates a form in which the mounting base portion 1 and the sliding plate portion 2 are integrally formed of the same material, the application of the present invention is not limited to this embodiment. For example, it can be applied to a form in which a mounting base portion 1 and a sliding plate portion 2 are formed separately and integrally formed via a connecting member such as a pin, such as a so-called floating disk.

取付基部１は、いわゆるハット状を呈し、車両の車軸に設けられる図示外のアクスルハブと図示外のホイールとの間に挟み込まれる円板状の端壁部１１と、該端壁部１１の外周縁から車軸方向である軸方向に沿って延び、摺動板部２のオフセットに供する円筒状の周壁部１２と、を有する。すなわち、本実施形態では、周壁部１２が軸方向外側に延出することにより、図示外の車軸との取付位置（端壁部１１）に対して摺動板部２が軸方向内側にオフセットされている。なお、摺動板部２は、取付基部１に対して必ずしもオフセットしている必要はなく、ブレーキディスクロータの仕様等に応じて、取付基部１に対して摺動板部２をオフセットさせない構成としてもよい。 The mounting base 1 has a so-called hat shape, and has a disc-shaped end wall portion 11 sandwiched between an axle hub (not shown) provided on an axle of a vehicle and a wheel (not shown), and an outer peripheral edge of the end wall portion 11. It has a cylindrical peripheral wall portion 12 extending from the axle along the axial direction and serving as an offset of the sliding plate portion 2. That is, in the present embodiment, the peripheral wall portion 12 extends outward in the axial direction, so that the sliding plate portion 2 is offset inward in the axial direction with respect to the mounting position (end wall portion 11) with the axle (end wall portion 11) (not shown). ing. The sliding plate portion 2 does not necessarily have to be offset with respect to the mounting base portion 1, and the sliding plate portion 2 is not offset with respect to the mounting base portion 1 according to the specifications of the brake disc rotor and the like. May be good.

端壁部１１は、特に図３に示すように、中央位置に設けられ、図示外のアクスルハブの外端部が貫通する貫通孔１１ａと、該貫通孔１１ａの外周域に設けられ、図示外のアクスルハブに設けられた複数（例えば４つ又は５つ）のハブボルトが挿通する挿通孔１１ｂと、を有する。このように、ブレーキディスクロータは、端壁部１１の貫通孔１１ａに図示外のアクスルハブが貫通し、かつ図示外の複数のハブボルトがそれぞれ端壁部１１の前記各挿通孔１１ｂに挿通した状態で図示外の車軸に対して同心状に取り付けられる。 As shown in FIG. 3, the end wall portion 11 is provided at a central position and is provided in a through hole 11a through which the outer end portion of an axle hub (not shown) penetrates and an outer peripheral region of the through hole 11a, which is not shown. It has an insertion hole 11b through which a plurality of (for example, four or five) hub bolts provided in the axle hub are inserted. As described above, in the brake disc rotor, the axle hub (not shown) penetrates the through hole 11a of the end wall portion 11, and a plurality of hub bolts (not shown) are inserted into the respective insertion holes 11b of the end wall portion 11, respectively. It is mounted concentrically with respect to axles not shown.

周壁部１２は、例えば図１に示すように、内端部が端壁部１１の外周縁部に接続されると共に、外端部が摺動板部２の内周縁部に接続され、端壁部１１と摺動板部２とを繋いでいる。なお、本実施形態では、図１に示すような、周壁部１２が摺動板部２のうち、後述する外側のアウタ摺動板２２に繋がる形態を例示しているが、本発明の適用は当該形態に限定されるものではなく、図２に示すような、周壁部１２が後述する内側のインナ摺動板２１に繋がる形態にも適用可能である。 As shown in FIG. 1, for example, the peripheral wall portion 12 has an inner end portion connected to the outer peripheral edge portion of the end wall portion 11 and an outer end portion connected to the inner peripheral edge portion of the sliding plate portion 2, and the end wall portion 12. The portion 11 and the sliding plate portion 2 are connected. In the present embodiment, as shown in FIG. 1, the peripheral wall portion 12 is connected to the outer outer sliding plate 22 of the sliding plate portion 2, which will be described later, but the present invention is applicable. The present invention is not limited to this form, and can be applied to a form in which the peripheral wall portion 12 is connected to the inner sliding plate 21 described later, as shown in FIG.

摺動板部２は、図１、図２に示すように、車軸方向である軸方向に対向して配置された一対の摺動板である、内側に配置されるインナ摺動板２１と、外側に配置されるアウタ摺動板２２と、で構成される。インナ摺動板２１とアウタ摺動板２２とは、図１〜図３に示すように、インナ摺動板２１とアウタ摺動板２２の軸方向間に配置され、周方向に沿って複数設けられ、かつ径方向に複数列設けられた接続部３（第１接続部３１、第２接続部３２及び第３接続部３３）により、一体に接続されている。また、インナ摺動板２１とアウタ摺動板２２とが接続部３によって接続されることで、当該インナ摺動板２１とアウタ摺動板２２との間には、摺動板部２の内周側から外周側へ空気を通流させる複数の通気路４が形成されている。 As shown in FIGS. 1 and 2, the sliding plate portion 2 is a pair of sliding plates arranged so as to face each other in the axial direction, which is the axle direction, and the inner sliding plate 21 arranged inside. It is composed of an outer sliding plate 22 arranged on the outside. As shown in FIGS. 1 to 3, the inner sliding plate 21 and the outer sliding plate 22 are arranged between the inner sliding plate 21 and the outer sliding plate 22 in the axial direction, and a plurality of the inner sliding plate 21 and the outer sliding plate 22 are provided along the circumferential direction. They are integrally connected by connecting portions 3 (first connecting portion 31, second connecting portion 32, and third connecting portion 33) which are provided in a plurality of rows in the radial direction. Further, since the inner sliding plate 21 and the outer sliding plate 22 are connected by the connecting portion 3, the inner sliding plate 21 and the outer sliding plate 22 are separated from each other in the sliding plate portion 2. A plurality of ventilation passages 4 for allowing air to flow from the peripheral side to the outer peripheral side are formed.

インナ摺動板２１は、図示外のアクスルハブ側となる軸方向内側に配置され、軸方向内側に配置されるブレーキパッド（図示外のインナパッド）と摺動可能に設けられる。他方、アウタ摺動板２２は、図示外のアクスルハブの反対側となる軸方向外側に配置されるブレーキパッド（図示外のアウタパッド）と摺動可能に設けられている。 The inner sliding plate 21 is arranged inside in the axial direction on the axle hub side (not shown), and is slidably provided with a brake pad (inner pad (not shown)) arranged inside in the axial direction. On the other hand, the outer sliding plate 22 is slidably provided with a brake pad (outer pad (not shown)) arranged on the outer side in the axial direction, which is opposite to the axle hub (not shown).

接続部３は、図３に示すように、径方向において３列に配置されていて、最内周側となる第１列に設けられた第１接続部３１と、最外周側となる第２列に設けられた第２接続部３２と、第１接続部３１と第２接続部３２との間に位置する第３列に設けられた第３接続部３３と、で構成される。第１〜第３接続部３１〜３３は、それぞれ周方向に沿ってほぼ等間隔に環状に配置されると共に、径方向に沿って放射状に形成されている。なお、本実施形態では、接続部３を、第１〜第３接続部３１〜３３からなる３列で構成した形態を例示しているが、本発明の適用は当該形態に限定されるものではなく、例えば２列、或いは４列以上で構成した形態にも適用可能である。 As shown in FIG. 3, the connecting portions 3 are arranged in three rows in the radial direction, and the first connecting portion 31 provided in the first row on the innermost peripheral side and the second connecting portion 31 on the outermost peripheral side. It is composed of a second connecting portion 32 provided in a row and a third connecting portion 33 provided in a third row located between the first connecting portion 31 and the second connecting portion 32. The first to third connecting portions 31 to 33 are arranged in an annular shape at substantially equal intervals along the circumferential direction, and are formed radially along the radial direction. In the present embodiment, the connection portion 3 is illustrated by three rows consisting of the first to third connection portions 31 to 33, but the application of the present invention is not limited to this embodiment. However, it can also be applied to a form composed of, for example, two rows or four or more rows.

通気路４は、周方向に隣接する第１接続部３１の周方向間に画定される第１通気路４１と、周方向に隣接する第２接続部３２の周方向間に画定される第２通気路４２と、周方向に隣接する第３接続部３３の周方向間に画定される第３通気路４３と、を含む。すなわち、通気路４では、ブレーキディスクロータの回転に伴い、第１通気路４１から第３通気路４３を通って第２通気路４２へと通気する。 The air passage 4 is defined between the first air passage 41 defined between the circumferential directions of the first connecting portion 31 adjacent in the circumferential direction and the second air passage 41 defined between the circumferential directions of the second connecting portion 32 adjacent in the circumferential direction. It includes a ventilation passage 42 and a third ventilation passage 43 defined between the circumferential directions of the third connecting portion 33 adjacent in the circumferential direction. That is, in the ventilation passage 4, as the brake disc rotor rotates, ventilation is performed from the first ventilation passage 41 through the third ventilation passage 43 to the second ventilation passage 42.

図４は、図３に示す第１〜第３接続部３１〜３３の一部を拡大して表示した、図３の要部拡大図を示している。 FIG. 4 shows an enlarged view of a main part of FIG. 3 in which a part of the first to third connection portions 31 to 33 shown in FIG. 3 is enlarged and displayed.

図４に示すように、第１〜第３接続部３１〜３３は、周方向において、各列それぞれ同一の形状に設定されている（図３参照）。さらに、第１〜第３接続部３１〜３３は、径方向において、いわゆる千鳥状に、第１、第２接続部３１，３２に対して、第３接続部３３が位相をずらして配置されている。すなわち、第１、第２接続部３１，３２は、周方向において、同じ位相に配置されていて、第３接続部３３が、周方向において、第１、第２接続部３１，３２の中間位相に配置されている。 As shown in FIG. 4, the first to third connection portions 31 to 33 are set to have the same shape in each row in the circumferential direction (see FIG. 3). Further, in the first to third connection portions 31 to 33, the third connection portion 33 is arranged in a so-called staggered pattern with respect to the first and second connection portions 31 and 32 in a phase shift. There is. That is, the first and second connecting portions 31 and 32 are arranged in the same phase in the circumferential direction, and the third connecting portion 33 has an intermediate phase between the first and second connecting portions 31 and 32 in the circumferential direction. Is located in.

第１、第３接続部３１，３３は、一定の周方向幅Ｗ１に設定され、径方向において概ね平行な二面幅を有する直線状に形成された定幅部３１ｘ，３３ｘと、該定幅部３１ｘ，３３ｘの径方向の内端部及び外端部にそれぞれ設けられ、径方向の内側及び外側へ向かって周方向幅が徐々に減少する、断面ほぼ円弧状の第１縮幅部３１ｙ，３３ｙ及び第２縮幅部３１ｚ，３３ｚと、を有する。このように、第１、第３接続部３１，３３では、径方向に沿って直線状に延出する定幅部３１ｘ，３３ｘによって、第１、第３通気路４１，４３における通気が整流され、通気の流れが円滑化されている。さらに、第１、第３接続部３１，３３では、第１縮幅部３１ｙ，３３ｙ及び第２縮幅部３１ｚ，３３ｚにおける周方向幅の漸減によって、第１、第３通気路４１，４３の前後における通気の流れについても円滑化されている。なお、本実施形態では、第１接続部３１と第３接続部３３とを同じ周方向幅Ｗ１に設定したものを例示しているが、第１接続部３１と第３接続部３３とは、必ずしも同一の周方向幅に設定されている必要はなく、ブレーキディスクロータの仕様等に応じて、それぞれ異なる周方向幅に設定してもよい。 The first and third connecting portions 31, 33 are set to a constant circumferential width W1 and are linearly formed constant width portions 31x, 33x having two surface widths that are substantially parallel in the radial direction, and the constant width. The first contracted width portion 31y, which is provided at the inner end portion and the outer end portion in the radial direction of the portions 31x and 33x, and whose circumferential width gradually decreases toward the inside and the outside in the radial direction, which has a substantially arcuate cross section. It has 33y and second narrowed width portions 31z and 33z. In this way, in the first and third connection portions 31, 33, the ventilation in the first and third ventilation passages 41 and 43 is rectified by the constant width portions 31x and 33x extending linearly along the radial direction. , The flow of ventilation is smooth. Further, in the first and third connecting portions 31, 33, the first and third air passages 41 and 43 are gradually reduced in the circumferential width in the first narrowed width portions 31y and 33y and the second narrowed width portions 31z and 33z. The flow of ventilation before and after is also smoothed. In this embodiment, the first connection portion 31 and the third connection portion 33 are set to have the same circumferential width W1, but the first connection portion 31 and the third connection portion 33 are referred to as each other. It is not always necessary to set the same circumferential width, and different circumferential widths may be set according to the specifications of the brake disc rotor and the like.

また、第１、第３接続部３１，３３は、周方向幅Ｗ１が、第２接続部３２の周方向間隔Ｗ２よりも小さく設定されていて、第１、第３通気路４１，４３の周方向幅Ｗ３，Ｗ４を、より大きく確保することが可能となっている。これにより、第１、第３通気路４１，４３における通気抵抗が低減され、ブレーキディスクロータ（摺動板部２）のより効果的な冷却に供する。 Further, in the first and third connection portions 31, 33, the circumferential width W1 is set to be smaller than the circumferential distance W2 of the second connection portion 32, and the circumferences of the first and third air passages 41 and 43 are set to be smaller. It is possible to secure a larger direction width W3 and W4. As a result, the ventilation resistance in the first and third ventilation passages 41 and 43 is reduced, and the brake disc rotor (sliding plate portion 2) is provided for more effective cooling.

第２接続部３２は、断面が概ね五角形となるように形成されたものであって、径方向の外側に設けられた第１幅部３２ａと、該第１幅部３２ａよりも径方向の内側に設けられ、インナ摺動板２１及びアウタ摺動板２２の内周側へ向けて第１幅部３２ａよりも周方向幅が減少する第２幅部３２ｂと、を有する。第１幅部３２ａと第２幅部３２ｂは、一体に形成されていて、全体として、内周側に向かって凸となる断面五角形に形成されている。 The second connecting portion 32 is formed so that the cross section is substantially pentagonal, and the first width portion 32a provided on the outer side in the radial direction and the inner side in the radial direction from the first width portion 32a. The inner sliding plate 21 and the outer sliding plate 22 are provided with a second width portion 32b whose circumferential width is smaller than that of the first width portion 32a toward the inner peripheral side. The first width portion 32a and the second width portion 32b are integrally formed, and as a whole, are formed in a pentagonal cross section that is convex toward the inner peripheral side.

第１幅部３２ａは、一定の周方向幅Ｗ５に設定された、径方向において概ね平行な二面幅を有する断面矩形状に形成されている。なお、本実施形態では、第１幅部３２ａについて、周方向幅Ｗ５が一定となる形態を例示しているが、本発明の適用は当該形態に限定されるものではない。すなわち、本発明に係る第１幅部３２ａは、第２幅部３２ｂに対して相対的に大きい周方向幅Ｗ５を有する形態であればよく、例えば、内周側へ向かって周方向幅Ｗ５が漸減する形態や、内周側へ向かって周方向幅Ｗ５が漸増する形態など、ブレーキディスクロータの仕様等に応じて種々の形態を採ることが可能である。 The first width portion 32a is formed in a rectangular cross section having a two-sided width substantially parallel in the radial direction, which is set to a constant circumferential width W5. In the present embodiment, the first width portion 32a exemplifies a mode in which the circumferential width W5 is constant, but the application of the present invention is not limited to this mode. That is, the first width portion 32a according to the present invention may have a circumferential width W5 that is relatively large with respect to the second width portion 32b. For example, the circumferential width W5 toward the inner peripheral side. Various forms can be adopted depending on the specifications of the brake disc rotor, such as a form in which the width is gradually reduced and a form in which the width W5 in the circumferential direction gradually increases toward the inner peripheral side.

第２幅部３２ｂは、インナ摺動板２１及びアウタ摺動板２２の内周側へ向かって周方向幅Ｗ６が徐々に減少する断面逆三角形状形成されている。なお、本実施形態では、第２幅部３２ｂを構成する二辺３２１ｂ，３２２ｂを直線状に形成することにより周方向幅Ｗ６を漸減した形態が例示されているが、本発明の適用は当該形態に限定されるものではない。換言すれば、本発明に係る第２幅部３２ｂは、第１幅部３２ａに対して相対的に小さい周方向幅Ｗ６を有する形態であればよく、例えば、第２幅部３２ｂの周方向幅Ｗ６が異なる変化率をもって段階的に減少するような形態を採ることも可能である。また、第２幅部３２ｂの周方向幅Ｗ６を漸減させる態様についても、本実施形態のように、周方向幅Ｗ６が線形的に減少する態様のほか、例えば第２幅部３２ｂを構成する二辺３２１ｂ，３２２ｂが第１幅部３２ａ側へ凹む凹円弧状（後述する本発明の第７実施形態参照）、又は第３接続部３３側へ突出する凸円弧状に形成されるなど、周方向幅Ｗ６が非線形的（例えば二次曲線的）に漸減する態様であってもよい。 The second width portion 32b is formed in an inverted triangular cross section in which the circumferential width W6 gradually decreases toward the inner peripheral side of the inner sliding plate 21 and the outer sliding plate 22. In the present embodiment, a form in which the circumferential width W6 is gradually reduced by forming the two sides 321b and 322b constituting the second width portion 32b in a straight line is exemplified, but the application of the present invention is the same. It is not limited to. In other words, the second width portion 32b according to the present invention may have a circumferential width W6 that is relatively smaller than the first width portion 32a. For example, the circumferential width of the second width portion 32b. It is also possible to take a form in which W6 gradually decreases with different rates of change. Further, as for the mode in which the circumferential width W6 of the second width portion 32b is gradually reduced, in addition to the mode in which the circumferential width W6 is linearly reduced as in the present embodiment, for example, the second width portion 32b is formed. Circumferential directions such that the sides 321b and 322b are formed in a concave arc shape recessed toward the first width portion 32a side (see the seventh embodiment of the present invention described later) or a convex arc shape protruding toward the third connecting portion 33 side. The width W6 may be gradually decreased in a non-linear manner (for example, in a quadratic curve).

（本実施形態の作用効果）
図１３に示すように、従来のベンチレーテッド型ブレーキディスクロータは、当該ブレーキディスクロータの剛性に最も影響を与える、アウタ摺動板１０１及びインナ摺動板１０２の最外周側に設けられた第２接続部１０４が、内周側に向かって凸となる三角形状に形成されていたため、ブレーキディスクロータの十分な剛性を確保することが困難であった。これにより、ブレーキディスクロータにおいて、いわゆる熱座屈が発生し、この熱座屈に伴い振動（ジャダ）を招来してしまうおそれがあった。 (Action and effect of this embodiment)
As shown in FIG. 13, the conventional ventilated brake disc rotor is provided on the outermost peripheral side of the outer sliding plate 101 and the inner sliding plate 102, which most affects the rigidity of the brake disc rotor. Since the two connecting portions 104 are formed in a triangular shape that is convex toward the inner peripheral side, it is difficult to secure sufficient rigidity of the brake disc rotor. As a result, so-called thermal buckling occurs in the brake disc rotor, and there is a risk of causing vibration (judder) due to this thermal buckling.

これに対し、本実施形態に係るベンチレーテッド型ブレーキディスクロータでは、接続部３のうち、インナ摺動板２１及びアウタ摺動板２２の最外周側に設けられた第２接続部３２が、第１幅部３２ａと第２幅部３２ｂとからなる、断面ほぼ五角形となるように形成されている。これにより、第２接続部３２の断面積をより大きく確保することができる。 On the other hand, in the ventilated type brake disc rotor according to the present embodiment, of the connecting portions 3, the second connecting portion 32 provided on the outermost peripheral side of the inner sliding plate 21 and the outer sliding plate 22 is provided. The first width portion 32a and the second width portion 32b are formed so as to have a substantially pentagonal cross section. As a result, a larger cross-sectional area of the second connecting portion 32 can be secured.

すなわち、本実施形態に係るベンチレーテッド型ブレーキディスクロータによれば、特に最外周側に位置する第１幅部３２ａにおいて、断面が三角形状に形成された前記従来のベンチレーテッド型ブレーキディスクロータと比べて、図４に示す網掛け部Ｘの分だけ、第２接続部３２の断面積を増大させることができる。 That is, according to the ventilated brake disc rotor according to the present embodiment, the conventional ventilated brake disc rotor having a triangular cross section is formed particularly in the first width portion 32a located on the outermost peripheral side. As compared with the above, the cross-sectional area of the second connecting portion 32 can be increased by the amount of the shaded portion X shown in FIG.

このように、本実施形態に係るベンチレーテッド型ブレーキディスクロータでは、第２接続部３２の間隔が最も広くブレーキディスクロータの剛性に最も影響を及ぼす、最外周側に位置する第１幅部３２ａの断面積を大きく確保することが可能となる結果、ブレーキディスクロータの剛性を効果的に向上させることができ、熱座屈に伴う振動（ジャダ）の発生を抑制することができる。 As described above, in the ventilated type brake disc rotor according to the present embodiment, the first width portion 32a located on the outermost outermost side has the widest interval between the second connection portions 32 and has the greatest effect on the rigidity of the brake disc rotor. As a result of being able to secure a large cross-sectional area of the brake disc rotor, the rigidity of the brake disc rotor can be effectively improved, and the occurrence of vibration (judder) due to thermal buckling can be suppressed.

また、第２接続部３２が、断面がほぼ五角形状となるように形成されていることで、例えば断面ほぼ三角形状に形成された前記従来のベンチレーテッド型ブレーキディスクロータと比べて図４に示す網掛け部Ｘの分だけ、換言すれば第１幅部３２ａに相当する分だけ、当該第２接続部３２の断面積の変更の自由度を増大させることができる。すなわち、前記従来の形態では、図１３に示すように、第２接続部１０４の径方向幅Ｗｙを調整することによって、ブレーキディスクロータの固有振動数の変更が可能となる一方、本実施形態では、図４に示すように、第１幅部３２ａの径方向幅Ｗｒ１と第２幅部３２ｂの径方向幅Ｗｒ２を調整することによって、ブレーキディスクロータの固有振動数の変更が可能となる。このように、本実施形態によれば、第１幅部３２ａと第２幅部３２ｂが設けられていることにより、ブレーキディスクロータの固有振動数の変更の自由度が増大し、ブレーキディスクロータの振動に伴うブレーキノイズの抑制に寄与することができる。 Further, since the second connecting portion 32 is formed so as to have a substantially pentagonal cross section, FIG. 4 shows, for example, as compared with the conventional ventilated brake disc rotor formed having a substantially triangular cross section. The degree of freedom in changing the cross-sectional area of the second connecting portion 32 can be increased by the amount of the shaded portion X shown, in other words, by the amount corresponding to the first width portion 32a. That is, in the conventional embodiment, as shown in FIG. 13, the natural frequency of the brake disc rotor can be changed by adjusting the radial width Wy of the second connecting portion 104, while in the present embodiment. As shown in FIG. 4, the natural frequency of the brake disc rotor can be changed by adjusting the radial width Wr1 of the first width portion 32a and the radial width Wr2 of the second width portion 32b. As described above, according to the present embodiment, by providing the first width portion 32a and the second width portion 32b, the degree of freedom of changing the natural frequency of the brake disc rotor is increased, and the brake disc rotor It can contribute to the suppression of brake noise associated with vibration.

また、本実施形態では、接続部３が、第１〜第３接続部３１〜３３によって構成され、径方向において３列に配置されている。換言すれば、最内周側に位置する第１接続部３１と、最外周側に位置する第２接続部３２との中間位置に、第３接続部３３が設けられている。このように、第１、第２接続部３１，３２に加えて第３接続部３３が設けられていることにより、接続部３が第１、第２接続部３１，３２の２列で構成されている場合と比べて、接続部３の間に形成される通気路４のレイアウトの自由度を増大させることができる。これにより、通気路４における効率的な通気が可能となり、ブレーキディスクロータの効果的な冷却を図ることができる。 Further, in the present embodiment, the connecting portions 3 are composed of the first to third connecting portions 31 to 33 and are arranged in three rows in the radial direction. In other words, the third connecting portion 33 is provided at an intermediate position between the first connecting portion 31 located on the innermost peripheral side and the second connecting portion 32 located on the outermost peripheral side. As described above, since the third connection portion 33 is provided in addition to the first and second connection portions 31 and 32, the connection portion 3 is composed of two rows of the first and second connection portions 31 and 32. It is possible to increase the degree of freedom in the layout of the ventilation passage 4 formed between the connecting portions 3 as compared with the case where the connection portion 3 is used. As a result, efficient ventilation in the ventilation passage 4 becomes possible, and effective cooling of the brake disc rotor can be achieved.

〔第２実施形態〕
図５は本発明に係るベンチレーテッド型ブレーキディスクロータの第２実施形態を示し、本実施形態は、前記第１実施形態における第３接続部３３の形態を変更したものである。なお、かかる変更点以外の基本的な構成については、前記第１実施形態と同様である。そのため、第１実施形態と同一の構成については、同一の符号を付すことにより、その説明を省略する。 [Second Embodiment]
FIG. 5 shows a second embodiment of the ventilated brake disc rotor according to the present invention, and this embodiment is a modification of the third connection portion 33 in the first embodiment. The basic configuration other than such changes is the same as that of the first embodiment. Therefore, the same components as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

図５に示すように、本実施形態に係るベンチレーテッド型ブレーキディスクロータでは、第３接続部３３が、径方向外側へ向けて周方向幅Ｗ７が増大する第３幅部３３ａと、該第３幅部３３ａの径方向外側に一体に設けられ、前記各摺動板２１，２２の外周側へ向けて周方向幅Ｗ８が減少する第４幅部３３ｂと、からなる、概ね菱形状に形成されている。 As shown in FIG. 5, in the ventilated type brake disc rotor according to the present embodiment, the third connecting portion 33 has a third width portion 33a in which the circumferential width W7 increases toward the outer side in the radial direction, and the third connecting portion 33a. A substantially rhombic shape is formed of a fourth width portion 33b which is integrally provided on the radial outer side of the three width portions 33a and whose circumferential width W8 decreases toward the outer peripheral side of each of the sliding plates 21 and 22. Has been done.

第３幅部３３ａは、テーパ状に形成された直線状の二辺３３１ａ，３３２ａによって構成され、径方向外側へ向かって周方向幅Ｗ７が徐々に増大するように形成されている。また、第３幅部３３ａの周方向幅Ｗ７が径方向外側へ向かって漸増することで、周方向に隣接する第３幅部３３ａの周方向間隔Ｗ４が、径方向において一定となっている。換言すれば、第３幅部３３ａは、周方向に隣接する第３幅部３３ａの周方向間隔Ｗ４が一定となる所定の変化率を有する周方向幅Ｗ７に設定されている。 The third width portion 33a is composed of two linear sides 331a and 332a formed in a tapered shape, and is formed so that the circumferential width W7 gradually increases toward the outer side in the radial direction. Further, the circumferential width W7 of the third width portion 33a gradually increases toward the outer side in the radial direction, so that the circumferential distance W4 of the third width portion 33a adjacent to the circumferential direction becomes constant in the radial direction. In other words, the third width portion 33a is set to the circumferential width W7 having a predetermined rate of change in which the circumferential distance W4 of the third width portion 33a adjacent in the circumferential direction is constant.

なお、本実施形態では、第３幅部３３ａを構成する二辺３３１ａ，３３２ａを直線状に形成することにより周方向幅Ｗ７を漸増した形態が例示されているが、本発明の適用は当該形態に限定されるものではなく、例えば当該第３幅部３３ａの周方向幅Ｗ７が異なる変化率をもって段階的に増大するような形態を採ることも可能である。また、第３幅部３３ａの周方向幅Ｗ７を漸増させる態様についても、本実施形態のように、周方向幅Ｗ７が線形的に増大する態様のほか、例えば当該第３幅部３３ａを構成する二辺３３１ａ，３３２ａが円弧状に形成されるなど、周方向幅Ｗ７が非線形的（例えば二次曲線的）に漸増する態様であってもよい。 In the present embodiment, a form in which the circumferential width W7 is gradually increased by forming the two sides 331a and 332a constituting the third width portion 33a in a straight line is exemplified, but the application of the present invention is the same. For example, it is possible to adopt a form in which the circumferential width W7 of the third width portion 33a gradually increases with different rates of change. Further, as for the mode in which the circumferential width W7 of the third width portion 33a is gradually increased, in addition to the mode in which the circumferential width W7 is linearly increased as in the present embodiment, for example, the third width portion 33a is configured. The circumferential width W7 may be gradually increased non-linearly (for example, in a quadratic curve) such that the two sides 331a and 332a are formed in an arc shape.

第４幅部３３ｂは、テーパ状に形成された直線状の二辺３３１ｂ，３３２ｂによって構成され、径方向外側へ向かって周方向幅Ｗ８が徐々に減少するように形成されている。また、第４幅部３３ｂを構成する二辺３３１ｂ，３３２ｂは、それぞれ隣接対向する第２接続部３２の第１幅部３２ａの二辺３２１ａ，３２２ａに対して平行となるように形成されている。これにより、第３接続部３３に隣接対向する各第２接続部３２との間に形成される第１接続通気路４４及び第２接続通気路４５の幅Ｗ９が、当該第１、第２接続通気路４４，４５の延出方向において、一定となっている。換言すれば、第４幅部３３ｂは、隣接対向する第３接続部３３との間隔（第１、第２接続通気路の幅Ｗ９）が一定となる所定の変化率を有する周方向幅Ｗ８に設定されている。 The fourth width portion 33b is composed of two linear sides 331b and 332b formed in a tapered shape, and is formed so that the circumferential width W8 gradually decreases toward the outer side in the radial direction. Further, the two sides 331b and 332b constituting the fourth width portion 33b are formed so as to be parallel to the two sides 321a and 322a of the first width portion 32a of the second connecting portion 32 adjacent to each other. .. As a result, the width W9 of the first connection ventilation passage 44 and the second connection ventilation passage 45 formed between the second connection portions 32 adjacent to and opposed to the third connection portion 33 becomes the first and second connections. It is constant in the extending direction of the ventilation passages 44 and 45. In other words, the fourth width portion 33b has a circumferential width W8 having a predetermined rate of change in which the distance (width W9 of the first and second connection air passages) from the adjacent third connection portion 33 is constant. It is set.

なお、本実施形態では、第４幅部３３ｂを構成する二辺３３１ｂ，３３２ｂを直線状に形成することにより周方向幅Ｗ８を漸減した形態が例示されているが、本発明の適用は当該形態に限定されるものではなく、例えば当該第４幅部３３ｂの周方向幅Ｗ８が異なる変化率をもって段階的に減少するような形態を採ることも可能である。また、第４幅部３３ｂの周方向幅Ｗ８を漸減させる態様についても、本実施形態のように、周方向幅Ｗ８が線形的に減少する態様のほか、例えば当該第４幅部３３ｂを構成する二辺３３１ｂ，３３２ｂが円弧状に形成されるなど、周方向幅Ｗ８が非線形的（例えば二次曲線的）に漸減する態様であってもよい。 In the present embodiment, a form in which the circumferential width W8 is gradually reduced by forming the two sides 331b and 332b constituting the fourth width portion 33b in a straight line is exemplified, but the application of the present invention is the same. For example, it is possible to adopt a form in which the circumferential width W8 of the fourth width portion 33b gradually decreases with a different rate of change. Further, as for the mode in which the circumferential width W8 of the fourth width portion 33b is gradually reduced, in addition to the mode in which the circumferential width W8 is linearly reduced as in the present embodiment, for example, the fourth width portion 33b is configured. The circumferential width W8 may be gradually reduced in a non-linear manner (for example, in a quadratic curve), such that the two sides 331b and 332b are formed in an arc shape.

以上のように、本実施形態では、第３接続部３３が、第３幅部３３ａと第４幅部３３ｂとからなる、断面がほぼ菱形となるように形成されている。これにより、前記第１実施形態と比べて、網掛け部Ｙの分だけ、当該第３接続部３３の断面積を、より大きく確保することができる。 As described above, in the present embodiment, the third connecting portion 33 is formed to have a substantially rhombic cross section, which is composed of the third width portion 33a and the fourth width portion 33b. As a result, the cross-sectional area of the third connecting portion 33 can be secured larger by the amount of the shaded portion Y as compared with the first embodiment.

しかも、本実施形態に係る第３接続部３３は、第３幅部３３ａにおいて、径方向外側へ向けて周方向幅Ｗ７が増大するように構成されている。このように、ブレーキディスクロータの剛性に影響を及ぼしやすい径方向外側へ向かって周方向幅Ｗ７が増大するように構成されているため、ブレーキディスクロータの剛性を、より効果的に向上させることができる。 Moreover, the third connecting portion 33 according to the present embodiment is configured such that the circumferential width W7 increases toward the outer side in the radial direction in the third width portion 33a. As described above, since the circumferential width W7 is configured to increase outward in the radial direction, which tends to affect the rigidity of the brake disc rotor, the rigidity of the brake disc rotor can be improved more effectively. it can.

また、第３接続部３３は径方向に沿って配置されることから、第３接続部３３の周方向幅が一定の場合には、周方向に隣り合う第３接続部３３，３３の間に形成される第３通気路４３の幅は、径方向外側へ向かって大きくなる。一方、第２接続部３２の断面積を大きく確保しようとすると、第２接続部３２と第３接続部３３が近接することとなり、第２接続部３２と第３接続部３３の間に形成される第１、第２接続通気路４４，４５の幅Ｗ９が小さくなる。そうすると、第１、第２接続通気路４４，４５の幅Ｗ９の変化量（ギャップ）が大きくなってしまう。その結果、第３通気路４３から第１、第２接続通気路４４，４５に流れる通気の抵抗が増大し、ブレーキディスクロータの十分な冷却効果が得られないおそれがある。 Further, since the third connecting portion 33 is arranged along the radial direction, when the circumferential width of the third connecting portion 33 is constant, it is between the third connecting portions 33 and 33 adjacent to each other in the circumferential direction. The width of the formed third air passage 43 increases radially outward. On the other hand, when trying to secure a large cross-sectional area of the second connecting portion 32, the second connecting portion 32 and the third connecting portion 33 come close to each other, and are formed between the second connecting portion 32 and the third connecting portion 33. The width W9 of the first and second connecting air passages 44 and 45 becomes smaller. Then, the amount of change (gap) in the width W9 of the first and second connection ventilation passages 44 and 45 becomes large. As a result, the resistance of the ventilation flowing from the third ventilation passage 43 to the first and second connection ventilation passages 44 and 45 increases, and there is a possibility that a sufficient cooling effect of the brake disc rotor cannot be obtained.

これに対して、上述のように、第３接続部３３において、径方向外側へ向かって周方向幅Ｗ７が増大する第３幅部３３ａが設けられていることによって、第３通気路４３の周方向幅Ｗ４の変化量を小さくする（本実施形態では一定とする）ことができる。これにより、第３通気路４３と、第１、第２接続通気路４４，４５との間における通気路の幅の変化量（ギャップ）を低減することができる。その結果、第３通気路４３から第１、第２接続通気路４４，４５に流れる通気の抵抗を低下させることが可能となり、ブレーキディスクロータの冷却効果を向上させることができる。 On the other hand, as described above, the third connecting portion 33 is provided with the third width portion 33a in which the circumferential width W7 increases toward the outer side in the radial direction, so that the circumference of the third ventilation passage 43 is increased. The amount of change in the direction width W4 can be reduced (constant in this embodiment). Thereby, the amount of change (gap) in the width of the ventilation passage between the third ventilation passage 43 and the first and second connection ventilation passages 44 and 45 can be reduced. As a result, it is possible to reduce the resistance of the ventilation flowing from the third ventilation passage 43 to the first and second connection ventilation passages 44 and 45, and it is possible to improve the cooling effect of the brake disc rotor.

また、第３通気路４３と第１、第２接続通気路４４，４５の間の通気抵抗が低下することにより、ブレーキディスクロータの鋳造時において、通気路４の形成に供する中子（例えば砂中子）を容易に除去できるメリットもある。 Further, since the ventilation resistance between the third ventilation passage 43 and the first and second connection ventilation passages 44 and 45 is reduced, the core (for example, sand) used for forming the ventilation passage 4 at the time of casting the brake disc rotor is formed. There is also the merit that the core) can be easily removed.

また、本実施形態の場合、第３接続部３３を周方向に拡大するかたちで形成する一方、第１接続部３１については、第２、第３接続部３２，３３に対して比較的小さい一定の周方向幅Ｗ１に設定されている。このように、前記各摺動板２１，２２の最内周側に配置され、ブレーキディスクロータの剛性に最も影響の小さい第１接続部３１については、最小の周方向幅Ｗ１に設定することで、周方向幅が比較的小さくなりやすい内周側において、第１通気路４１の周方向幅Ｗ３をより大きく設定することができる。これにより、前記各摺動板２１，２２の内周側に位置する第１通気路４１において、通気の円滑な流れを確保することが可能となり、ブレーキディスクロータの効果的な冷却に供する。 Further, in the case of the present embodiment, the third connection portion 33 is formed so as to expand in the circumferential direction, while the first connection portion 31 is relatively small and constant with respect to the second and third connection portions 32 and 33. It is set to the circumferential width W1 of. In this way, the first connecting portion 31, which is arranged on the innermost peripheral side of each of the sliding plates 21 and 22 and has the least influence on the rigidity of the brake disc rotor, is set to the minimum circumferential width W1. On the inner peripheral side where the circumferential width tends to be relatively small, the circumferential width W3 of the first ventilation passage 41 can be set larger. As a result, it becomes possible to ensure a smooth flow of ventilation in the first ventilation passage 41 located on the inner peripheral side of each of the sliding plates 21 and 22, and the brake disc rotor is effectively cooled.

〔第３実施形態〕
図６は本発明に係るベンチレーテッド型ブレーキディスクロータの第３実施形態を示し、本実施形態は、前記第１実施形態における一部の第２接続部３２の形態を変更したものである。なお、かかる変更点以外の基本的な構成については、前記第１実施形態と同様である。そのため、第１実施形態と同一の構成については、同一の符号を付すことにより、その説明を省略する。 [Third Embodiment]
FIG. 6 shows a third embodiment of the ventilated brake disc rotor according to the present invention, and this embodiment is a modification of the form of a part of the second connection portion 32 in the first embodiment. The basic configuration other than such changes is the same as that of the first embodiment. Therefore, the same components as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

図６に示すように、本実施形態に係るベンチレーテッド型ブレーキディスクロータでは、第２接続部３２の一部、具体的にはインナ摺動板２１及びアウタ摺動板２２の直径上において、ブレーキディスクロータの中心軸線Ｚを挟んで点対称に配置される一対又は複数対の第２接続部３２が、他の第２接続部３２に対して相対的に小さい周方向幅Ｗ１１を有する第２狭幅接続部３４として構成されている。これにより、第２狭幅接続部３４と周方向に隣接する第２接続部３２との周方向間隔Ｗ１２が、周方向に隣接する他の第２接続部３２同士の周方向間隔Ｗ２よりも大きくなっている。 As shown in FIG. 6, in the ventilated type brake disc rotor according to the present embodiment, a part of the second connection portion 32, specifically, on the diameters of the inner sliding plate 21 and the outer sliding plate 22. A pair or a plurality of pairs of second connecting portions 32 arranged point-symmetrically with respect to the central axis Z of the brake disc rotor have a circumferential width W11 that is relatively small with respect to the other second connecting portions 32. It is configured as a narrow connection portion 34. As a result, the circumferential distance W12 between the second narrow connection portion 34 and the second connection portion 32 adjacent in the circumferential direction is larger than the circumferential distance W2 between the other second connection portions 32 adjacent in the circumferential direction. It has become.

なお、前記各摺動板２１，２２の直径方向においてブレーキディスクロータの中心軸線Ｚを挟んで点対称に配置される一対の第２狭幅接続部３４を周方向に複数対設ける場合には、当該各対の第２狭幅接続部３４は、周方向において、それぞれ所定の間隔をもって等間隔に配置されることが望ましい。これにより、当該各対の第２狭幅接続部３４を、後述する振動モードの適切な節（又は腹）とすることができる。 When a plurality of pairs of second narrow connection portions 34 arranged point-symmetrically with respect to the central axis Z of the brake disc rotor in the diameter direction of each of the sliding plates 21 and 22 are provided in the circumferential direction. It is desirable that the second narrow connection portions 34 of each pair are arranged at equal intervals at predetermined intervals in the circumferential direction. As a result, the second narrow connection portion 34 of each pair can be an appropriate node (or antinode) of the vibration mode described later.

以上のように、本実施形態では、第２接続部３２の一部が、他の第２接続部３２よりも相対的に小さい周方向幅Ｗ１１を有する第２狭幅接続部３４として構成されることで、ブレーキディスクロータの周方向における一部の剛性を意図的に低下させている。これにより、第２狭幅接続部３４を振動モードの節（又は腹）として、ブレーキディスクロータに固定することができる。その結果、ブレーキパッドによる定常な振動モードの発生を抑制することが可能となり、ブレーキノイズの抑制に供する。 As described above, in the present embodiment, a part of the second connection portion 32 is configured as the second narrow connection portion 34 having a circumferential width W11 that is relatively smaller than the other second connection portions 32. As a result, the rigidity of a part of the brake disc rotor in the circumferential direction is intentionally reduced. As a result, the second narrow connection portion 34 can be fixed to the brake disc rotor as a node (or antinode) of the vibration mode. As a result, it becomes possible to suppress the generation of a steady vibration mode by the brake pad, and the brake noise is suppressed.

特に、第２接続部３２は、ブレーキディスクロータの最外周側に配置されることから、剛性の低下量（ギャップ）が大きく、前記振動モードの節（又は腹）を、より明確に設定することが可能となる。その結果、前記定常な振動モードの発生をより効果的に抑制し、前記ブレーキノイズの効果的な抑制に供する。 In particular, since the second connection portion 32 is arranged on the outermost peripheral side of the brake disc rotor, the amount of decrease in rigidity (gap) is large, and the node (or antinode) of the vibration mode is set more clearly. Is possible. As a result, the generation of the steady vibration mode is suppressed more effectively, and the brake noise is effectively suppressed.

〔第４実施形態〕
図７は本発明に係るベンチレーテッド型ブレーキディスクロータの第４実施形態を示し、本実施形態は、前記第２実施形態における一部の第３接続部３３の形態を変更したものである。なお、かかる変更点以外の基本的な構成については、前記第２実施形態と同様である。そのため、第２実施形態と同一の構成については、同一の符号を付すことにより、その説明を省略する。 [Fourth Embodiment]
FIG. 7 shows a fourth embodiment of the ventilated brake disc rotor according to the present invention, and this embodiment is a modification of the form of a part of the third connection portion 33 in the second embodiment. The basic configuration other than such changes is the same as that of the second embodiment. Therefore, the same components as those in the second embodiment are designated by the same reference numerals, and the description thereof will be omitted.

図７に示すように、本実施形態に係るベンチレーテッド型ブレーキディスクロータでは、第３接続部３３の一部、具体的にはインナ摺動板２１及びアウタ摺動板２２の直径上において、ブレーキディスクロータの中心軸線Ｚを挟んで点対称に配置される一対又は複数対の第３接続部３３が、他の第３接続部３３に対して相対的に小さい、一定の周方向幅Ｗ１を有する第３狭幅接続部３５として構成されている。これにより、第３狭幅接続部３５と周方向に隣接する第３接続部３３との周方向間隔Ｗ１０が、周方向に隣接する他の第３接続部３３同士の周方向間隔Ｗ４よりも大きくなっている。 As shown in FIG. 7, in the ventilated type brake disc rotor according to the present embodiment, a part of the third connection portion 33, specifically, on the diameters of the inner sliding plate 21 and the outer sliding plate 22. A pair or a plurality of pairs of third connecting portions 33 arranged point-symmetrically with respect to the central axis Z of the brake disc rotor have a constant circumferential width W1 that is relatively small with respect to the other third connecting portions 33. It is configured as a third narrow connection portion 35 to have. As a result, the circumferential distance W10 between the third narrow connection portion 35 and the third connection portion 33 adjacent in the circumferential direction is larger than the circumferential distance W4 between the other third connection portions 33 adjacent in the circumferential direction. It has become.

なお、前記各摺動板２１，２２の直径方向においてブレーキディスクロータの中心軸線Ｚを挟んで点対称に配置される一対の第３狭幅接続部３５を周方向に複数対設ける場合には、当該各対の第３狭幅接続部３５は、周方向において、それぞれ所定の間隔をもって等間隔に配置されることが望ましい。これにより、当該各対の第３狭幅接続部３５を、後述する振動モードの適切な節（又は腹）とすることができる。 When a plurality of pairs of third narrow connection portions 35 arranged point-symmetrically with respect to the central axis Z of the brake disc rotor in the radial direction of each of the sliding plates 21 and 22 are provided in the circumferential direction. It is desirable that the third narrow connection portions 35 of each pair are arranged at equal intervals at predetermined intervals in the circumferential direction. As a result, the third narrow connection portion 35 of each pair can be an appropriate node (or antinode) of the vibration mode described later.

以上のように、本実施形態では、第３接続部３３の一部が、他の第３接続部３３よりも相対的に小さい周方向幅Ｗ１を有する第３狭幅接続部３５として構成されることで、ブレーキディスクロータの周方向における一部の剛性を意図的に低下させている。これにより、第３狭幅接続部３５を振動モードの節（又は腹）として、ブレーキディスクロータに固定することができる。その結果、ブレーキパッドによる定常な振動モードの発生を抑制することが可能となり、ブレーキノイズの抑制に供する。 As described above, in the present embodiment, a part of the third connection portion 33 is configured as the third narrow width connection portion 35 having a circumferential width W1 that is relatively smaller than the other third connection portions 33. As a result, the rigidity of a part of the brake disc rotor in the circumferential direction is intentionally reduced. As a result, the third narrow connection portion 35 can be fixed to the brake disc rotor as a node (or antinode) of the vibration mode. As a result, it becomes possible to suppress the generation of a steady vibration mode by the brake pad, and the brake noise is suppressed.

〔第５実施形態〕
図８は本発明に係るベンチレーテッド型ブレーキディスクロータの第５実施形態を示し、本実施形態は、前記第２実施形態における一部の第２、第３接続部３２，３３の形態を変更したものである。なお、かかる変更点以外の基本的な構成については、前記第２実施形態と同様である。そのため、第２実施形態と同一の構成については、同一の符号を付すことにより、その説明を省略する。 [Fifth Embodiment]
FIG. 8 shows a fifth embodiment of the ventilated brake disc rotor according to the present invention, and this embodiment modifies some of the second and third connection portions 32 and 33 in the second embodiment. It was done. The basic configuration other than such changes is the same as that of the second embodiment. Therefore, the same components as those in the second embodiment are designated by the same reference numerals, and the description thereof will be omitted.

図８に示すように、本実施形態に係るベンチレーテッド型ブレーキディスクロータでは、第２接続部３２の一部、具体的にはインナ摺動板２１及びアウタ摺動板２２の直径上において、ブレーキディスクロータの中心軸線Ｚを挟んで点対称に配置される一対又は複数対の第２接続部３２が、他の第２接続部３２に対して相対的に小さい周方向幅Ｗ１１を有する第２狭幅接続部３４として構成されている。これにより、第２狭幅接続部３４と周方向に隣接する第２接続部３２との周方向間隔Ｗ１２は、周方向に隣接する他の第２接続部３２との周方向間隔Ｗ２よりも大きくなっている。 As shown in FIG. 8, in the ventilated type brake disc rotor according to the present embodiment, a part of the second connection portion 32, specifically, on the diameters of the inner sliding plate 21 and the outer sliding plate 22. A pair or a plurality of pairs of second connecting portions 32 arranged point-symmetrically with respect to the central axis Z of the brake disc rotor have a circumferential width W11 that is relatively small with respect to the other second connecting portions 32. It is configured as a narrow connection portion 34. As a result, the circumferential distance W12 between the second narrow connection portion 34 and the second connection portion 32 adjacent in the circumferential direction is larger than the circumferential distance W2 between the second narrow connection portion 34 and the other second connection portion 32 adjacent in the circumferential direction. It has become.

さらに、本実施形態では、第３接続部３３の一部、具体的には前記第２狭幅接続部３４と隣接する一対の第３接続部３３，３３が、他の第３接続部３３に対して相対的に小さい、一定の周方向幅Ｗ１を有する一対の第３狭幅接続部３５，３５として構成されている。換言すれば、１つの第２狭幅接続部３４に対し、該第２狭幅接続部３４と隣接する一対の第３接続部３３，３３が、一対の第３狭幅接続部３５，３５として構成されている。これにより、これら一対の第３狭幅接続部３５，３５間の周方向間隔Ｗ１３、及び一対の第３狭幅接続部３５，３５と周方向に隣接する第３接続部３３との周方向間隔Ｗ１４が、周方向に隣接する他の第３接続部３３同士の周方向間隔Ｗ４よりも大きくなっている。 Further, in the present embodiment, a part of the third connection portion 33, specifically, a pair of third connection portions 33, 33 adjacent to the second narrow connection portion 34 is connected to the other third connection portion 33. On the other hand, it is configured as a pair of third narrow width connecting portions 35, 35 having a constant circumferential width W1 which is relatively small. In other words, with respect to one second narrow connection portion 34, a pair of third narrow connection portions 33, 33 adjacent to the second narrow connection portion 34 are used as a pair of third narrow connection portions 35, 35. It is configured. As a result, the circumferential distance W13 between the pair of the third narrow connection portions 35, 35, and the circumferential distance between the pair of the third narrow connection portions 35, 35 and the third connection portion 33 adjacent in the circumferential direction. W14 is larger than the circumferential distance W4 between the other third connecting portions 33 adjacent to each other in the circumferential direction.

なお、一対の第３狭幅接続部３５，３５については、例えば第２狭幅接続部３４が複数設けられた場合には、この複数の第２狭幅接続部３４に対してそれぞれ隣接するように、周方向に複数対設ける態様としてもよい。 Regarding the pair of third narrow connection portions 35, 35, for example, when a plurality of second narrow connection portions 34 are provided, they are adjacent to each of the plurality of second narrow connection portions 34. In addition, a plurality of pairs may be provided in the circumferential direction.

また、本実施形態では、一の第２狭幅接続部３４につき一対の第３狭幅接続部３５，３５を配置する態様を例示しているが、周方向に隣接する複数の第２接続部３２を第２狭幅接続部３４として構成することも可能である。この場合には、第２狭幅接続部３４に隣接する当該第２狭幅接続部３４よりも１つ多い第３接続部３３を第３狭幅接続部３５として構成することが可能である。すなわち、一の第２狭幅接続部３４につき一対の第３狭幅接続部３５を配置する態様に限られず、単数又は周方向に連続する複数（ｎ）個の第２接続部３２を第２狭幅接続部３４として構成し、この第２狭幅接続部３４に隣接する（ｎ＋１）個の第３接続部３３を第３狭幅接続部３５として構成することができる。 Further, in the present embodiment, a mode in which a pair of third narrow width connection portions 35, 35 are arranged for one second narrow width connection portion 34 is illustrated, but a plurality of second connection portions adjacent to each other in the circumferential direction are illustrated. It is also possible to configure 32 as the second narrow connection portion 34. In this case, the third connecting portion 33, which is one more than the second narrow connecting portion 34 adjacent to the second narrow connecting portion 34, can be configured as the third narrow connecting portion 35. That is, the mode is not limited to arranging a pair of third narrow connection portions 35 for each second narrow connection portion 34, and a singular or a plurality of (n) second connection portions 32 continuous in the circumferential direction are secondly arranged. It is configured as a narrow connection portion 34, and (n + 1) third connection portions 33 adjacent to the second narrow connection portion 34 can be configured as a third narrow connection portion 35.

以上のように、本実施形態では、第２狭幅接続部３４に加えて、該第２狭幅接続部３４と隣接する一対の第３接続部３３が、第３狭幅接続部３５，３５として構成されていることで、当該一の第２狭幅接続部３４及び一対の第３狭幅接続部３５，３５によって、振動モードの節（又は腹）をより明確に設定することができる。これにより、ブレーキパッドによる定常な振動モードの発生がより効果的に抑制され、ブレーキノイズの効果的な抑制に供する。 As described above, in the present embodiment, in addition to the second narrow connection portion 34, the pair of third connection portions 33 adjacent to the second narrow connection portion 34 are the third narrow connection portions 35, 35. The second narrow connection portion 34 and the pair of third narrow connection portions 35, 35 can more clearly set the node (or antinode) of the vibration mode. As a result, the generation of the steady vibration mode by the brake pad is suppressed more effectively, and the brake noise is effectively suppressed.

また、上述のように、最外周列に位置する一の第２接続部３２に対し、中間列に位置する一対の第３接続部３３，３３の剛性を低下させることによって、後述する本発明の第６実施形態のような、一対の第２接続部３２，３２の剛性を低下させる場合に比べて、前記ブレーキノイズの抑制を図りつつも、比較的高い剛性を確保できるメリットがある。 Further, as described above, the present invention described later by reducing the rigidity of the pair of third connecting portions 33, 33 located in the intermediate row with respect to the one second connecting portion 32 located in the outermost peripheral row. Compared with the case where the rigidity of the pair of second connecting portions 32, 32 is lowered as in the sixth embodiment, there is an advantage that a relatively high rigidity can be secured while suppressing the brake noise.

〔第６実施形態〕
図９は本発明に係るベンチレーテッド型ブレーキディスクロータの第６実施形態を示し、本実施形態は、前記第２実施形態における一部の第２、第３接続部３２，３３の形態を変更したものである。なお、かかる変更点以外の基本的な構成については、前記第２実施形態と同様である。そのため、第２実施形態と同一の構成については、同一の符号を付すことにより、その説明を省略する。 [Sixth Embodiment]
FIG. 9 shows a sixth embodiment of the ventilated brake disc rotor according to the present invention, and this embodiment modifies some of the second and third connection portions 32 and 33 in the second embodiment. It was done. The basic configuration other than such changes is the same as that of the second embodiment. Therefore, the same components as those in the second embodiment are designated by the same reference numerals, and the description thereof will be omitted.

図９に示すように、本実施形態に係るベンチレーテッド型ブレーキディスクロータでは、第２接続部３２の一部、具体的にはインナ摺動板２１及びアウタ摺動板２２の直径上において、ブレーキディスクロータの中心軸線Ｚを挟んで点対称に配置される一対の第２接続部３２，３２が、他の第２接続部３２に対して相対的に小さい周方向幅Ｗ１１を有する一対の第２狭幅接続部３４，３４として構成されている。これにより、これら一対の第２狭幅接続部３４，３４間の周方向間隔Ｗ１５、及び一対の第２狭幅接続部３４，３４と周方向に隣接する第２接続部３２との周方向間隔Ｗ１２が、周方向に隣接する他の第２接続部３２同士の周方向間隔Ｗ２よりも大きくなっている。 As shown in FIG. 9, in the ventilated type brake disc rotor according to the present embodiment, a part of the second connection portion 32, specifically, on the diameters of the inner sliding plate 21 and the outer sliding plate 22. A pair of second connecting portions 32, 32 arranged point-symmetrically with respect to the central axis Z of the brake disc rotor have a circumferential width W11 that is relatively small with respect to the other second connecting portions 32. It is configured as two narrow connection portions 34, 34. As a result, the circumferential distance W15 between the pair of second narrow connection portions 34, 34, and the circumferential distance between the pair of second narrow connection portions 34, 34 and the second connection portion 32 adjacent in the circumferential direction. W12 is larger than the circumferential distance W2 between the other second connecting portions 32 adjacent to each other in the circumferential direction.

なお、第２狭幅接続部３４については、説明の便宜上、インナ摺動板２１及びアウタ摺動板２２の直径上においてそれぞれ前記一対の第２狭幅接続部３４，３４を配置する態様について説明したが、当該一対の第２狭幅接続部３４，３４を周方向において所定の間隔をもって複数対設ける態様としてもよい。 Regarding the second narrow connection portion 34, for convenience of explanation, a mode in which the pair of second narrow connection portions 34, 34 are arranged on the diameters of the inner sliding plate 21 and the outer sliding plate 22, respectively, will be described. However, a plurality of pairs of the pair of second narrow connection portions 34, 34 may be provided at predetermined intervals in the circumferential direction.

さらに、本実施形態では、第３接続部３３の一部、具体的には前記一対の第２狭幅接続部３４，３４の周方向中間に位置する第３接続部３３が、他の第３接続部３３に対して相対的に小さい、一定の周方向幅Ｗ１を有する第３狭幅接続部３５として構成されている。換言すれば、一対の第２狭幅接続部３４，３４に対し、該一対の第２狭幅接続部３４，３４の周方向中間に位置する一の第３接続部３３が、第３狭幅接続部３５として構成されている。これにより、第３狭幅接続部３５の周方向に隣接する第３接続部３３との周方向間隔Ｗ１０が、周方向に隣接する他の第３接続部３３同士の周方向間隔Ｗ４よりも大きくなっている。 Further, in the present embodiment, a part of the third connection portion 33, specifically, the third connection portion 33 located in the middle of the pair of second narrow connection portions 34, 34 in the circumferential direction is the other third connection portion 33. It is configured as a third narrow width connecting portion 35 having a constant circumferential width W1 which is relatively small with respect to the connecting portion 33. In other words, with respect to the pair of second narrow connection portions 34, 34, one third connection portion 33 located in the middle of the pair of second narrow width connection portions 34, 34 in the circumferential direction has a third narrow width. It is configured as a connecting portion 35. As a result, the circumferential distance W10 between the third narrow connection portion 35 and the third connection portion 33 adjacent in the circumferential direction is larger than the circumferential distance W4 between the other third connection portions 33 adjacent in the circumferential direction. It has become.

なお、第３狭幅接続部３５については、例えば第２狭幅接続部３４，３４が複数対設けられた場合には、この複数対の第２狭幅接続部３４，３４に対してそれぞれ隣接するように、周方向に複数設ける態様としてもよい。 Regarding the third narrow connection portion 35, for example, when a plurality of pairs of the second narrow connection portions 34, 34 are provided, they are adjacent to the plurality of pairs of the second narrow connection portions 34, 34, respectively. As such, a plurality of configurations may be provided in the circumferential direction.

また、本実施形態では、一対の第２狭幅接続部３４，３４につき一の第３狭幅接続部３５を配置する態様を例示しているが、周方向に隣接する３つ以上の第２接続部３２を第２狭幅接続部３４として構成することも可能である。この場合には、第２狭幅接続部３４に隣接する当該第２狭幅接続部３４よりも１つ少ない第３接続部３３を第３狭幅接続部３５として構成することが可能である。すなわち、一対の第２狭幅接続部３４，３４につき一の第３狭幅接続部３５を配置する態様に限られず、周方向に連続する複数（ｎ）個の第２接続部３２を第２狭幅接続部３４として構成し、この第２狭幅接続部３４の周方向中間に位置する（ｎ−１）個の第３接続部３３を第３狭幅接続部３５として構成することができる。 Further, in the present embodiment, an embodiment in which one third narrow connection portion 35 is arranged for each pair of second narrow connection portions 34, 34 is illustrated, but three or more second narrow connection portions adjacent to each other in the circumferential direction are arranged. It is also possible to configure the connecting portion 32 as the second narrow connecting portion 34. In this case, the third connecting portion 33, which is one less than the second narrow connecting portion 34 adjacent to the second narrow connecting portion 34, can be configured as the third narrow connecting portion 35. That is, the present invention is not limited to the mode in which one third narrow connection portion 35 is arranged for each pair of second narrow connection portions 34, 34, and a plurality of (n) second connection portions 32 continuous in the circumferential direction are secondly arranged. It is configured as a narrow connection portion 34, and (n-1) third connection portions 33 located in the middle in the circumferential direction of the second narrow connection portion 34 can be configured as the third narrow connection portion 35. ..

以上のように、本実施形態では、一対の第２狭幅接続部３４，３４に加えて、該一対の第２狭幅接続部３４，３４の周方向中間に位置する一の第３接続部３３が第３狭幅接続部３５として構成されていることで、当該一対の第２狭幅接続部３４，３４及び一の第３狭幅接続部３５によって、振動モードの節（又は腹）をより明確に設定することができる。これにより、ブレーキパッドによる定常な振動モードの発生がより効果的に抑制され、ブレーキノイズの効果的な抑制に供する。 As described above, in the present embodiment, in addition to the pair of second narrow connection portions 34, 34, one third connection portion located in the middle of the pair of second narrow connection portions 34, 34 in the circumferential direction. Since 33 is configured as a third narrow connection portion 35, the pair of second narrow connection portions 34, 34 and one third narrow connection portion 35 provide a vibration mode node (or antinode). It can be set more clearly. As a result, the generation of the steady vibration mode by the brake pad is suppressed more effectively, and the brake noise is effectively suppressed.

また、上述のように、中間列に位置する一の第３接続部３３に対し、最外周列に位置する一対の第２接続部３２，３２の剛性を低下させることによって、前述した本発明の第５実施形態のような、一対の第３接続部３３，３３の剛性を低下させる場合に比べて、ブレーキディスクロータの剛性を確保しつつも、前記ブレーキノイズを比較的良好に抑制できるメリットがある。 Further, as described above, by reducing the rigidity of the pair of second connecting portions 32, 32 located in the outermost peripheral row with respect to the one third connecting portion 33 located in the intermediate row, the present invention described above Compared to the case where the rigidity of the pair of third connection portions 33, 33 is lowered as in the fifth embodiment, there is an advantage that the brake noise can be suppressed relatively well while ensuring the rigidity of the brake disc rotor. is there.

〔第７実施形態〕
図１０は本発明に係るベンチレーテッド型ブレーキディスクロータの第７実施形態を示し、本実施形態は、前記第２実施形態における第２接続部３２の形態を変更したものである。なお、かかる変更点以外の基本的な構成については、前記第２実施形態と同様である。そのため、第２実施形態と同一の構成については、同一の符号を付すことにより、その説明を省略する。 [7th Embodiment]
FIG. 10 shows a seventh embodiment of the ventilated brake disc rotor according to the present invention, and this embodiment is a modification of the second connection portion 32 in the second embodiment. The basic configuration other than such changes is the same as that of the second embodiment. Therefore, the same components as those in the second embodiment are designated by the same reference numerals, and the description thereof will be omitted.

図１０に示すように、本実施形態に係るベンチレーテッド型ブレーキディスクロータでは、第２接続部３２の第２幅部３２ｂを構成する二辺３２１ｂ，３２２ｂが、第１幅部３２ａ側、すなわち第３接続部３３から離間する側に凹む凹円弧状に形成されている。 As shown in FIG. 10, in the ventilated brake disc rotor according to the present embodiment, the two sides 321b and 322b constituting the second width portion 32b of the second connection portion 32 are on the first width portion 32a side, that is, It is formed in a concave arc shape that is recessed on the side away from the third connecting portion 33.

以上のように、本実施形態では、第２接続部３２の第２幅部３２ｂを構成する二辺３２１ｂ，３２２ｂが第１幅部３２ａ側へ凹となる凹円弧状に形成されていることにより、第２接続部３２と第３接続部３３の距離（第１、第２接続通気路４４，４５の幅Ｗ９）を維持したまま、前記二辺３２１ｂ，３２２ｂのオフセット分だけ、第３接続部３３を第２接続部３２に近づけることができる。これにより、第３接続部３３をより径方向外側（外周側）に配置することが可能となり、ブレーキディスクロータの剛性のさらなる向上が図れる。 As described above, in the present embodiment, the two sides 321b and 322b constituting the second width portion 32b of the second connecting portion 32 are formed in a concave arc shape that is concave toward the first width portion 32a. , While maintaining the distance between the second connection portion 32 and the third connection portion 33 (width W9 of the first and second connection ventilation passages 44 and 45), the third connection portion is offset by the two sides 321b and 322b. 33 can be brought closer to the second connection portion 32. As a result, the third connecting portion 33 can be arranged on the outer side (outer peripheral side) in the radial direction, and the rigidity of the brake disc rotor can be further improved.

〔第８実施形態〕
図１１は本発明に係るベンチレーテッド型ブレーキディスクロータの第８実施形態を示し、本実施形態は、前記第２実施形態における第３接続部３３の形態を変更したものである。なお、かかる変更点以外の基本的な構成については、前記第２実施形態と同様である。そのため、第２実施形態と同一の構成については、同一の符号を付すことにより、その説明を省略する。 [8th Embodiment]
FIG. 11 shows an eighth embodiment of the ventilated brake disc rotor according to the present invention, and this embodiment is a modification of the third connection portion 33 in the second embodiment. The basic configuration other than such changes is the same as that of the second embodiment. Therefore, the same components as those in the second embodiment are designated by the same reference numerals, and the description thereof will be omitted.

図１１に示すように、本実施形態に係るベンチレーテッド型ブレーキディスクロータでは、第３接続部３３の第３幅部３３ａを構成する二辺３３１ａ，３３２ａが、第４幅部３３ｂ側、すなわち第１接続部３１から離間する側に凹む凹円弧状に形成されている。さらに、第３接続部３３の第４幅部３３ｂを構成する二辺３３１ｂ，３３２ｂが、第３幅部３３ａ側、すなわち第２接続部３２から離間する側に凹む凹円弧状に形成されている。 As shown in FIG. 11, in the ventilated brake disc rotor according to the present embodiment, the two sides 331a and 332a constituting the third width portion 33a of the third connection portion 33 are on the fourth width portion 33b side, that is, It is formed in a concave arc shape that is recessed on the side away from the first connecting portion 31. Further, the two sides 331b and 332b constituting the fourth width portion 33b of the third connecting portion 33 are formed in a concave arc shape recessed on the third width portion 33a side, that is, on the side separated from the second connecting portion 32. ..

以上のように、本実施形態では、第３接続部３３の第４幅部３３ｂを構成する二辺３３１ｂ，３３２ｂが第３幅部３３ａ側へ凹となる凹円弧状に形成されていることにより、第２接続部３２と第３接続部３３の距離（第１、第２接続通気路４４，４５の幅Ｗ９）を維持したまま、前記二辺３３１ｂ，３３２ｂのオフセット分だけ、第３接続部３３を第２接続部３２に近づけることができる。これにより、第３接続部３３をより径方向外側（外周側）に配置することが可能となり、ブレーキディスクロータの剛性のさらなる向上が図れる。 As described above, in the present embodiment, the two sides 331b and 332b constituting the fourth width portion 33b of the third connecting portion 33 are formed in a concave arc shape that is concave toward the third width portion 33a. , While maintaining the distance between the second connection portion 32 and the third connection portion 33 (width W9 of the first and second connection ventilation passages 44 and 45), the third connection portion is offset by the two sides 331b and 332b. 33 can be brought closer to the second connection portion 32. As a result, the third connecting portion 33 can be arranged on the outer side (outer peripheral side) in the radial direction, and the rigidity of the brake disc rotor can be further improved.

また、本実施形態では、第３接続部３３の第３幅部３３ａを構成する二辺３３１ａ，３３２ａが第４幅部３３ｂ側へ凹となる凹円弧状に形成されていることにより、第１接続部３１と第３接続部３３の距離（間隔）を維持したまま、前記二辺３３１ａ，３３２ａのオフセット分だけ、第１接続部３１を第３接続部３３側へ延長、又は近づけることができる。これにより、第１接続部３１をより径方向外側（外周側）に配置することが可能となって、ブレーキディスクロータの剛性を一層向上させることができる。 Further, in the present embodiment, the two sides 331a and 332a constituting the third width portion 33a of the third connecting portion 33 are formed in a concave arc shape in which the two sides 331a and 332a are concave toward the fourth width portion 33b. While maintaining the distance (interval) between the connecting portion 31 and the third connecting portion 33, the first connecting portion 31 can be extended or brought closer to the third connecting portion 33 side by the offset of the two sides 331a and 332a. .. As a result, the first connection portion 31 can be arranged on the outer side (outer peripheral side) in the radial direction, and the rigidity of the brake disc rotor can be further improved.

〔第９実施形態〕
図１２は本発明に係るベンチレーテッド型ブレーキディスクロータの第９実施形態を示し、本実施形態は、前記第７実施形態における第３接続部３３の形態を変更したものである。なお、かかる変更点以外の基本的な構成については、前記第７実施形態と同様である。そのため、第７実施形態と同一の構成については、同一の符号を付すことにより、その説明を省略する。 [9th Embodiment]
FIG. 12 shows a ninth embodiment of the ventilated brake disc rotor according to the present invention, and this embodiment is a modification of the third connection portion 33 in the seventh embodiment. The basic configuration other than such changes is the same as that of the seventh embodiment. Therefore, the same components as those in the seventh embodiment are designated by the same reference numerals, and the description thereof will be omitted.

図１２に示すように、本実施形態に係るベンチレーテッド型ブレーキディスクロータでは、第２接続部３２において、第２接続部３２の第２幅部３２ｂを構成する二辺３２１ｂ，３２２ｂが、第１幅部３２ａ側、すなわち第３接続部３３から離間する側に凹む凹円弧状に形成されている。 As shown in FIG. 12, in the ventilated type brake disc rotor according to the present embodiment, in the second connecting portion 32, the two sides 321b and 322b constituting the second width portion 32b of the second connecting portion 32 are the second. It is formed in a concave arc shape that is recessed on the side of the 1 width portion 32a, that is, on the side separated from the third connecting portion 33.

また、第３接続部３３において、第３接続部３３の第３幅部３３ａを構成する二辺３３１ａ，３３２ａが、第４幅部３３ｂ側、すなわち第１接続部３１から離間する側に凹む凹円弧状に形成されている。さらに、第３接続部３３の第４幅部３３ｂを構成する二辺３３１ｂ，３３２ｂが、第３幅部３３ａ側、すなわち第２接続部３２から離間する側に凹む凹円弧状に形成されている。 Further, in the third connecting portion 33, the two sides 331a and 332a constituting the third width portion 33a of the third connecting portion 33 are recessed toward the fourth width portion 33b side, that is, the side separated from the first connecting portion 31. It is formed in an arc shape. Further, the two sides 331b and 332b constituting the fourth width portion 33b of the third connecting portion 33 are formed in a concave arc shape recessed on the third width portion 33a side, that is, on the side separated from the second connecting portion 32. ..

以上のように、とりわけ、本実施形態では、第２接続部３２の第２幅部３２ｂを構成する二辺３２１ｂ，３２２ｂが第１幅部３２ａ側へ凹となる凹円弧状に形成されると共に、第３接続部３３の第４幅部３３ｂを構成する二辺３３１ｂ，３３２ｂが第３幅部３３ａ側へ凹となる凹円弧状に形成されていることにより、第２接続部３２と第３接続部３３の距離（第１、第２接続通気路４４，４５の幅Ｗ９）を維持したまま、前記二辺３２１ｂ，３２２ｂ、及び前記二辺３３１ｂ，３３２ｂのオフセット分だけ、第３接続部３３を第２接続部３２側へさらに延長、又は近づけることができる。これにより、第３接続部３３をより一層径方向外側（外周側）に配置することが可能となり、ブレーキディスクロータの剛性のより一層の向上が図れる。 As described above, in particular, in the present embodiment, the two sides 321b and 322b constituting the second width portion 32b of the second connection portion 32 are formed in a concave arc shape that is concave toward the first width portion 32a. The two sides 331b and 332b forming the fourth width portion 33b of the third connection portion 33 are formed in a concave arc shape that is concave toward the third width portion 33a, so that the second connection portion 32 and the third connection portion 32 and the third are formed. While maintaining the distance between the connecting portions 33 (widths W9 of the first and second connecting ventilation passages 44 and 45), the third connecting portion 33 is offset by the two sides 321b and 322b and the two sides 331b and 332b. Can be further extended or brought closer to the second connection portion 32 side. As a result, the third connection portion 33 can be further arranged on the outer side (outer peripheral side) in the radial direction, and the rigidity of the brake disc rotor can be further improved.

本発明は、前記実施形態において例示した構成に限定されるものではなく、本発明の趣旨を逸脱しない範囲内で適用対象の仕様等に応じて自由に変更することができる。 The present invention is not limited to the configuration exemplified in the above embodiment, and can be freely changed according to the specifications and the like to be applied within a range not deviating from the gist of the present invention.

とりわけ、本発明は、第２接続部３２を前記五角形状に形成した点に１つの技術的特徴を有するものであるから、当該第２接続部３２が前記五角形状に形成された態様を有するものであれば、第１、第３接続部３１，３３については、ブレーキディスクロータの仕様等に応じていずれの態様を採用してもよい。 In particular, since the present invention has one technical feature in that the second connecting portion 32 is formed in the pentagonal shape, the second connecting portion 32 has an embodiment formed in the pentagonal shape. If this is the case, any mode may be adopted for the first and third connection portions 31, 33, depending on the specifications of the brake disc rotor and the like.

１…取付基部
２…摺動板部
２１…インナ摺動板
２２…アウタ摺動板
３…接続部
３１…第１接続部
３２…第２接続部
３３…第３接続部
３２ａ…第１幅部
３２ｂ…第２幅部
３２１ｂ，３２２ｂ…第２幅部を構成する二辺
３３ａ…第３幅部
３３ｂ…第４幅部
３３１ｂ，３３２ｂ…第４幅部を構成する二辺
３４…第２狭幅接続部
３５…第３狭幅接続部 1 ... Mounting base 2 ... Sliding plate 21 ... Inner sliding plate 22 ... Outer sliding plate 3 ... Connection 31 ... First connection 32 ... Second connection 33 ... Third connection 32a ... First width 32b ... Second width portions 321b, 322b ... Two sides 33a constituting the second width portion ... Third width portion 33b ... Fourth width portions 331b, 332b ... Two sides 34 constituting the fourth width portion ... Second narrow width Connection part 35 ... Third narrow connection part

Claims (10)

車軸方向に対向して配置され、円環状に形成されたインナ摺動板及びアウタ摺動板と、
前記インナ摺動板と前記アウタ摺動板の間に、該各摺動板の径方向において複数列設けられ、前記インナ摺動板と前記アウタ摺動板を接続する複数の接続部と、
を備えたベンチレーテッド型ブレーキディスクロータにおいて、
前記複数の接続部は、前記各摺動板の内周側に位置する第１列に配置された第１接続部と、前記各摺動板の外周側に位置する第２列に配置された第２接続部と、を含み、
前記第２接続部は、前記径方向の外側に設けられた第１幅部と、該第１幅部よりも前記径方向の内側に設けられ、前記各摺動板の内周側へ向けて前記第１幅部よりも周方向幅が減少する第２幅部と、を有する、
ことを特徴とするベンチレーテッド型ブレーキディスクロータ。 Inner sliding plate and outer sliding plate arranged in an annular shape facing each other in the axle direction, and
A plurality of rows are provided between the inner sliding plate and the outer sliding plate in the radial direction of each of the sliding plates, and a plurality of connecting portions for connecting the inner sliding plate and the outer sliding plate are provided.
In a ventilated brake disc rotor equipped with
The plurality of connecting portions are arranged in a first row arranged on the inner peripheral side of each of the sliding plates and a second row located on the outer peripheral side of each sliding plate. Including the second connection part
The second connecting portion is provided on the outer side in the radial direction and the inner side in the radial direction from the first width portion, and is directed toward the inner peripheral side of each of the sliding plates. It has a second width portion whose circumferential width is smaller than that of the first width portion.
A ventilated brake disc rotor that features this. 請求項１に記載のベンチレーテッド型ブレーキディスクロータにおいて、
前記複数の接続部は、前記径方向において３列に配置され、前記第１列と前記第２列との間の第３列に配置された第３接続部を含むことを特徴とするベンチレーテッド型ブレーキディスクロータ。 In the ventilated brake disc rotor according to claim 1,
The plurality of connecting portions are arranged in three rows in the radial direction, and include a third connecting portion arranged in a third row between the first row and the second row. Ted type brake disc rotor. 請求項２に記載のベンチレーテッド型ブレーキディスクロータにおいて、
前記第３接続部は、前記径方向の外側へ向けて前記周方向幅が増大する第３幅部と、該第３幅部よりも前記径方向の外側に設けられ、前記各摺動板の外周側へ向けて前記周方向幅が減少する第４幅部と、を有する、ことを特徴とするベンチレーテッド型ブレーキディスクロータ。 In the ventilated brake disc rotor according to claim 2.
The third connecting portion is provided on the third width portion in which the circumferential width increases toward the outside in the radial direction and on the outer side in the radial direction from the third width portion, and is provided on each of the sliding plates. A ventilated brake disc rotor comprising a fourth width portion whose circumferential width decreases toward the outer peripheral side. 請求項１〜３のいずれか一項に記載のベンチレーテッド型ブレーキディスクロータにおいて、
前記第２接続部のうち一部の前記第２接続部は、他の前記第２接続部よりも小さい前記周方向幅を有する第２狭幅接続部として構成されている、ことを特徴とするベンチレーテッド型ブレーキディスクロータ。 The ventilated brake disc rotor according to any one of claims 1 to 3.
A part of the second connection portion of the second connection portion is configured as a second narrow connection portion having the circumferential width smaller than that of the other second connection portion. Ventilated type brake disc rotor. 請求項２又は請求項３に記載のベンチレーテッド型ブレーキディスクロータにおいて、
前記第３接続部のうち一部の前記第３接続部は、他の前記第３接続部よりも小さい前記周方向幅を有する第３狭幅接続部として構成されている、ことを特徴とするベンチレーテッド型ブレーキディスクロータ。 In the ventilated brake disc rotor according to claim 2 or 3.
A part of the third connection portion of the third connection portion is configured as a third narrow connection portion having a circumferential width smaller than that of the other third connection portion. Ventilated type brake disc rotor. 請求項３に記載のベンチレーテッド型ブレーキディスクロータにおいて、
前記第２接続部のうち一部の前記第２接続部は、他の前記第２接続部よりも小さい前記周方向幅を有する第２狭幅接続部として構成され、
前記第３接続部のうち前記第２狭幅接続部に隣接する一対の前記第３接続部は、他の前記第３接続部よりも小さい前記周方向幅を有する第３狭幅接続部として構成されている、ことを特徴とするベンチレーテッド型ブレーキディスクロータ。 In the ventilated brake disc rotor according to claim 3,
A part of the second connection portion of the second connection portion is configured as a second narrow connection portion having the circumferential width smaller than that of the other second connection portion.
The pair of the third connection portions adjacent to the second narrow connection portion of the third connection portion are configured as a third narrow connection portion having the circumferential width smaller than that of the other third connection portions. A ventilated brake disc rotor that is characterized by being. 請求項３に記載のベンチレーテッド型ブレーキディスクロータにおいて、
前記第２接続部のうち周方向に隣接する一対の前記第２接続部は、他の前記第２接続部よりも小さい前記周方向幅を有する一対の第２狭幅接続部として構成され、
前記第３接続部のうち前記一対の第２狭幅接続部の周方向中間に位置する前記第３接続部は、他の前記第３接続部よりも小さい前記周方向幅を有する第３狭幅接続部として構成されている、ことを特徴とするベンチレーテッド型ブレーキディスクロータ。 In the ventilated brake disc rotor according to claim 3,
The pair of the second connection portions adjacent to each other in the circumferential direction of the second connection portion is configured as a pair of second narrow connection portions having the circumferential width smaller than that of the other second connection portions.
The third narrow width of the third connection portion, which is located in the middle of the pair of second narrow connection portions in the circumferential direction, has the circumferential width smaller than that of the other third connection portions. A ventilated brake disc rotor that is configured as a connection. 請求項３に記載のベンチレーテッド型ブレーキディスクロータにおいて、
前記第２接続部の前記第２幅部を構成する二辺は、それぞれ前記第１幅部側へ凹となる凹円弧状に形成されている、ことを特徴とするベンチレーテッド型ブレーキディスクロータ。 In the ventilated brake disc rotor according to claim 3,
A ventilated brake disc rotor characterized in that the two sides forming the second width portion of the second connecting portion are each formed in a concave arc shape that is concave toward the first width portion side. .. 請求項３又は請求項８に記載のベンチレーテッド型ブレーキディスクロータにおいて、
前記第３接続部の前記第４幅部を構成する二辺は、それぞれ前記第３幅部側へ凹となる凹円弧状に形成されている、ことを特徴とするベンチレーテッド型ブレーキディスクロータ。 In the ventilated brake disc rotor according to claim 3 or 8.
A ventilated brake disc rotor characterized in that the two sides forming the fourth width portion of the third connection portion are each formed in a concave arc shape that is concave toward the third width portion side. .. 請求項９に記載のベンチレーテッド型ブレーキディスクロータにおいて、
前記第３接続部の前記第３幅部を構成する二辺は、それぞれ前記第４幅部側へ凹となる凹円弧状に形成されている、ことを特徴とするベンチレーテッド型ブレーキディスクロータ。 In the ventilated brake disc rotor according to claim 9.
A ventilated brake disc rotor characterized in that the two sides forming the third width portion of the third connection portion are each formed in a concave arc shape that is concave toward the fourth width portion side. ..
JP2019160082A 2019-09-03 2019-09-03 Ventilated brake disc rotor Active JP6825057B1 (en)

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EP19214949.0A EP3789253B1 (en) 2019-09-03 2019-12-10 Ventilated type brake disc rotor
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JP6825057B1 (en) 2021-02-03
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